Remove trailing whitespace in lua files

Whitespace is not significant, so this should not be a problem.
https://secwiki.org/w/Nmap/Code_Standards

nselib/rpcap.lua

@@ -34,20 +34,20 @@ local table = require "table"
 _ENV = stdnse.module("rpcap", stdnse.seeall)
 
 RPCAP = {
-	
+
 	MessageType = {
 		ERROR				= 1,
 		FIND_ALL_INTERFACES	= 2,
 		AUTH_REQUEST		= 8,
 	},
-	
+
 	-- Holds the two supported authentication mechanisms PWD and NULL
 	Authentication = {
 
 		PWD = {
 
 			new = function(self, username, password)
-				local o = { 
+				local o = {
 					type = 1,
 					username = username,
 					password = password,
@@ -56,37 +56,37 @@ RPCAP = {
 				self.__index = self
 				return o
 	  		end,
-	
+
 			__tostring = function(self)
 				local DUMMY = 0
 				return bin.pack(">SSSSAA", self.type, DUMMY, #self.username, #self.password, self.username, self.password)
 			end,
-			
+
 		},
-		
+
 		NULL = {
-	
+
 			new = function(self)
-				local o = { 
+				local o = {
 					type = 0,
 				}
 				setmetatable(o, self)
 				self.__index = self
 				return o
 	  		end,
-	
+
 			__tostring = function(self)
 				local DUMMY = 0
 				return bin.pack(">SSSS", self.type, DUMMY, 0, 0)
 			end,
-						
-		}	
-		
+
+		}
+
 	},
-	
+
 	-- The common request and response header
 	Header = {
-		size = 8,		
+		size = 8,
 		new = function(self, type, value, length)
 			local o = {
 				version = 0,
@@ -98,25 +98,25 @@ RPCAP = {
 			self.__index = self
 			return o
 	  	end,
-	
+
 		parse = function(data)
 			local header = RPCAP.Header:new()
 			local pos
 			pos, header.version, header.type, header.value, header.length = bin.unpack(">CCSI", data)
 			return header
 		end,
-		
+
 		__tostring = function(self)
 			return bin.pack(">CCSI", self.version, self.type, self.value, self.length)
 		end,
 
 	},
-	
-	-- The implemented request types are kept here	
+
+	-- The implemented request types are kept here
 	Request = {
-				
+
 		Authentication = {
-			
+
 			new = function(self, data)
 				local o = {
 					header = RPCAP.Header:new(RPCAP.MessageType.AUTH_REQUEST, nil, #data),
@@ -126,15 +126,15 @@ RPCAP = {
 				self.__index = self
 				return o
 		  	end,
-			
+
 			__tostring = function(self)
 				return tostring(self.header) .. tostring(self.data)
 			end,
-			
+
 		},
-		
+
 		FindAllInterfaces = {
-			
+
 			new = function(self)
 				local o = {
 					header = RPCAP.Header:new(RPCAP.MessageType.FIND_ALL_INTERFACES)
@@ -143,27 +143,27 @@ RPCAP = {
 				self.__index = self
 				return o
 		  	end,
-			
+
 			__tostring = function(self)
 				return tostring(self.header)
 			end,
-			
-			
+
+
 		}
-		
-	},	
-	
+
+	},
+
 	-- Parsers for responses are kept here
 	Response = {
-		
-		Authentication = {		
+
+		Authentication = {
 			new = function(self)
 				local o = { }
 				setmetatable(o, self)
 				self.__index = self
 				return o
 		  	end,
-			
+
 			parse = function(data)
 				local resp = RPCAP.Response.Authentication:new()
 				local pos = RPCAP.Header.size + 1
@@ -171,7 +171,7 @@ RPCAP = {
 				return resp
 			end
 		},
-		
+
 		Error = {
 			new = function(self)
 				local o = { }
@@ -187,9 +187,9 @@ RPCAP = {
 				pos, err.error = bin.unpack("A" .. err.header.length, data, pos)
 				return err
 			end
-			
+
 		},
-		
+
 		FindAllInterfaces = {
 			new = function(self)
 				local o = { }
@@ -197,7 +197,7 @@ RPCAP = {
 				self.__index = self
 				return o
 			end,
-			
+
 			parse = function(data)
 
 				-- Each address is made up of 4 128 byte fields, this function
@@ -208,11 +208,11 @@ RPCAP = {
 					local offset = pos
 					local family, port
 					pos, family, port = bin.unpack(">SS", data, pos)
-					
+
 					if ( family == 0x0017 ) then
 						-- not sure why...
 						pos = pos + 4
-						
+
 						local ipv6
 						pos, ipv6 = bin.unpack("B16", data, pos)
 						return offset + 128, ipOps.bin_to_ip(ipv6)
@@ -221,27 +221,27 @@ RPCAP = {
 						pos, ipv4 = bin.unpack("B4", data, pos)
 						return offset + 128, ipOps.bin_to_ip(ipv4)
 					end
-						
+
 					return offset + 128, nil
 				end
-				
+
 				-- Parses one of X addresses returned for an interface
 				local function parseAddress(data, pos)
 					local fields = {"ip", "netmask", "bcast", "p2p"}
 					local addr = {}
-					
+
 					for _, f in ipairs(fields) do
 						pos, addr[f] = parseField(data, pos)
 					end
 
 					return pos, addr
 				end
-			
+
 				local resp = RPCAP.Response.FindAllInterfaces:new()
 				local pos = RPCAP.Header.size + 1
 				resp.header = RPCAP.Header.parse(data)
 				resp.ifaces = {}
-				
+
 				for i=1, resp.header.value do
 					local name_len, desc_len, iface_flags, addr_count, dummy
 					pos, name_len, desc_len, iface_flags, addr_count, dummy = bin.unpack(">SSISS", data, pos)
@@ -268,10 +268,10 @@ RPCAP = {
 				return resp
 			end,
 		}
-		
-		
+
+
 	}
-	
+
 }
 
 -- Maps packet types to classes
@@ -284,7 +284,7 @@ RPCAP.TypeToClass = {
 
 -- The communication class
 Comm = {
-	
+
 	-- Creates a new instance of the Comm class
 	-- @param host table
 	-- @param port table
@@ -295,12 +295,12 @@ Comm = {
 		self.__index = self
 		return o
 	end,
-	
+
 	-- Connects the socket to the server
 	connect = function(self)
 		return self.socket:connect(self.host, self.port)
 	end,
-	
+
 	-- Sends an instance of the request class to the server
 	-- @param req class instance
 	-- @return status true on success, false on failure
@@ -313,7 +313,7 @@ Comm = {
 	-- in RPCAP.TypeToClass
 	-- @return status true on success, false on failure
 	-- @return resp instance of a Response class or
-	--         err string containing the error message	
+	--         err string containing the error message
 	recv = function(self)
 		local status, hdr_data = self.socket:receive_buf(match.numbytes(RPCAP.Header.size), true)
 		if ( not(status) ) then
@@ -324,7 +324,7 @@ Comm = {
 		if ( not(header) ) then
 			return false, "rpcap: Failed to parse header"
 		end
-		
+
 		local status, data = self.socket:receive_buf(match.numbytes(header.length), true)
 		if ( not(status) ) then
 			return false, "rpcap: Failed to read packet data"
@@ -336,10 +336,10 @@ Comm = {
 				return true, resp
 			end
 		end
-		
+
 		return false, "Failed to receive response from server"
 	end,
-	
+
 	-- Sends and request and receives the response
 	-- @param req the instance of the Request class to send
 	-- @return status true on success, false on failure
@@ -352,23 +352,23 @@ Comm = {
 		end
 		return self:recv()
 	end,
-	
+
 	-- closes the socket
 	close = function(self)
 		return self.socket:close()
 	end,
-	
+
 }
 
 
 Helper = {
-	
+
 	-- Creates a new instance of the Helper class
 	-- @param host table
 	-- @param port table
 	-- @return o instance of Helper
 	new = function(self, host, port)
-		local o = { 
+		local o = {
 			host = host,
 			port = port,
 			comm = Comm:new(host, port)
@@ -382,7 +382,7 @@ Helper = {
 	connect = function(self)
 		return self.comm:connect(self.host, self.port)
 	end,
-	
+
 	-- Authenticates to the service, in case no username or password is given
 	-- NULL authentication is assumed.
 	-- @param username [optional]
@@ -391,20 +391,20 @@ Helper = {
 	-- @return err string containing error mesage on failure
 	login = function(self, username, password)
 		local auth
-		
+
 		if ( username and password ) then
 			auth = RPCAP.Authentication.PWD:new(username, password)
 		else
 			auth = RPCAP.Authentication.NULL:new()
 		end
-	
+
 		local req = RPCAP.Request.Authentication:new(tostring(auth))
 		local status, resp = self.comm:exch(req)
-	
+
 		if ( not(status) ) then
 			return false, resp
 		end
-		
+
 		if ( status and resp.error ) then
 			return false, resp.error
 		end
@@ -416,11 +416,11 @@ Helper = {
 	findAllInterfaces = function(self)
 		local req = RPCAP.Request.FindAllInterfaces:new()
 		local status, resp = self.comm:exch(req)
-	
+
 		if ( not(status) ) then
 			return false, resp
 		end
-		
+
 		local results = {}
 		for _, iface in ipairs(resp.ifaces) do
 			local entry = {}
@@ -431,7 +431,7 @@ Helper = {
 		end
 		return true, results
 	end,
-	
+
 	-- Closes the connection to the server
 	close = function(self)
 		return self.comm:close()