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/iax2.lua

@@ -17,11 +17,11 @@ _ENV = stdnse.module("iax2", stdnse.seeall)
 
 
 IAX2 = {
-	
+
 	FrameType = {
-		IAX = 6,		
+		IAX = 6,
 	},
-	
+
 	SubClass = {
 		ACK 		= 0x04,
 		REGACK		= 0x0f,
@@ -29,21 +29,21 @@ IAX2 = {
 		REGREL 		= 0x11,
 		CALLTOKEN 	= 0x28,
 	},
-	
+
 	InfoElement = {
-		USERNAME 	= 0x06,	
+		USERNAME 	= 0x06,
 		CHALLENGE	= 0x0f,
 		MD5_RESULT	= 0x10,
 		CALLTOKEN   = 0x36,
 	},
-	
+
 	PacketType = {
 		FULL = 1,
 	},
-	
+
 	-- The IAX2 Header
 	Header = {
-		
+
 		-- Creates a new Header instance
 		-- @param src_call number containing the source call
 		-- @param dst_call number containing the dest call
@@ -68,9 +68,9 @@ IAX2 = {
 			self.__index = self
 			return o
 		end,
-		
+
 		-- Parses data, a byte string, and creates a new Header instance
-		-- @return header instance of Header	
+		-- @return header instance of Header
 		parse = function(data)
 			local header = IAX2.Header:new()
 			local pos, frame_type = bin.unpack("C", data)
@@ -90,13 +90,13 @@ IAX2 = {
 			end
 			pos, header.dst_call = bin.unpack(">S", data, pos - 1)
 			header.dst_call = bit.band(header.dst_call, 0x7FFF)
-			
-			pos, header.timestamp, header.oseqno, 
+
+			pos, header.timestamp, header.oseqno,
 				header.iseqno, header.frametype, header.subclass = bin.unpack(">ICCCC", data, pos)
-			
+
 			return header
 		end,
-		
+
 		-- Converts the instance to a string
 		-- @return str containing the instance
 		__tostring = function(self)
@@ -114,10 +114,10 @@ IAX2 = {
 				self.oseqno, self.iseqno, self.frametype, self.subclass)
 		end,
 	},
-	
+
 	-- The IAX2 Request class
 	Request = {
-		
+
 		-- Creates a new instance
 		-- @param header instance of Header
 		new = function(self, header)
@@ -127,9 +127,9 @@ IAX2 = {
 			}
 			setmetatable(o, self)
 			self.__index = self
-			return o			
+			return o
 		end,
-		
+
 		-- Sets an Info Element or adds one, in case it's missing
 		-- @param key the key value of the IE to add
 		-- @param value string containing the value to set or add
@@ -141,7 +141,7 @@ IAX2 = {
 			end
 			table.insert(self.ies, { type = key, value = value } )
 		end,
-		
+
 		-- Gets an information element
 		-- @param key number containing the element number to retrieve
 		-- @return ie table containing the info element if it exists
@@ -160,24 +160,24 @@ IAX2 = {
 			for _, ie in ipairs(self.ies) do
 				data = data .. bin.pack("Cp", ie.type, ie.value )
 			end
-			
+
 			return tostring(self.header) .. data
 		end,
-		
+
 	},
-	
-	
+
+
 	-- The IAX2 Response
 	Response = {
-		
+
 		-- Creates a new instance
 		new = function(self)
 			local o = { ies = {} }
 			setmetatable(o, self)
 			self.__index = self
-			return o			
+			return o
 		end,
-		
+
 		-- Sets an Info Element or adds one, in case it's missing
 		-- @param key the key value of the IE to add
 		-- @param value string containing the value to set or add
@@ -189,7 +189,7 @@ IAX2 = {
 			end
 			table.insert(self.ies, { type = key, value = value } )
 		end,
-		
+
 		-- Gets an information element
 		-- @param key number containing the element number to retrieve
 		-- @return ie table containing the info element if it exists
@@ -200,16 +200,16 @@ IAX2 = {
 				end
 			end
 		end,
-		
+
 		-- Parses data, a byte string, and creates a response
-		-- @return resp instance of response	
+		-- @return resp instance of response
 		parse = function(data)
 			local resp = IAX2.Response:new()
 			if ( not(resp) ) then return end
 
 			resp.header = IAX2.Header.parse(data)
 			if ( not(resp.header) ) then return	end
-			
+
 			local pos = 13
 			resp.ies = {}
 			repeat
@@ -219,14 +219,14 @@ IAX2 = {
 			until( pos > #data )
 			return resp
 		end,
-		
+
 	}
-		
+
 }
 
 
 Helper = {
-	
+
 	-- Creates a new Helper instance
 	-- @param host table as received by the action method
 	-- @param port table as received by the action method
@@ -237,9 +237,9 @@ Helper = {
 		local o = { host = host, port = port, options = options or {} }
 		setmetatable(o, self)
 		self.__index = self
-		return o			
+		return o
 	end,
-	
+
 	-- Connects the UDP socket to the server
 	-- @return status true on success, false on failure
 	-- @return err message containing error if status is false
@@ -248,7 +248,7 @@ Helper = {
 		self.socket:set_timeout(self.options.timeout or 5000)
 		return self.socket:connect(self.host, self.port)
 	end,
-	
+
 	-- Sends a request to the server and receives the response
 	-- @param req instance containing the request to send to the server
 	-- @return status true on success, false on failure
@@ -263,11 +263,11 @@ Helper = {
 		if ( not(status) ) then
 			return false, "Failed to receive response from server"
 		end
-		
+
 		local resp = IAX2.Response.parse(data)
 		return true, resp
 	end,
-	
+
 	-- Request a session release
 	-- @param username string containing the extention (username)
 	-- @param password string containing the password
@@ -299,45 +299,45 @@ Helper = {
 		if ( not(status) ) then
 			return false, resp
 		end
-		
+
 		local challenge = resp:getIE(IAX2.InfoElement.CHALLENGE)
 		if ( not(challenge) ) then
 			return false, "Failed to retrieve challenge from server"
 		end
-		
+
 		regrel.header.iseqno = 1
 		regrel.header.oseqno = 1
 		regrel.header.dst_call = resp.header.src_call
 		regrel.ies = {}
-		
+
 		local hash = stdnse.tohex(openssl.md5(challenge.value .. password))
 		regrel:setIE(IAX2.InfoElement.USERNAME, username)
 		regrel:setIE(IAX2.InfoElement.MD5_RESULT, hash)
-		
+
 		status, resp = self:exch(regrel)
 		if ( not(status) ) then
 			return false, resp
 		end
-		
+
 		if ( IAX2.SubClass.ACK == resp.header.subclass ) then
 			local data
-			status, data = self.socket:receive()		
+			status, data = self.socket:receive()
 			resp = IAX2.Response.parse(data)
 		end
-		
+
 		if ( status and IAX2.SubClass.REGACK == resp.header.subclass ) then
 			return true
 		end
 		return false, "Release failed"
 	end,
-		
+
 	-- Close the connection with the server
 	-- @return true on success, false on failure
 	close = function(self)
 		return self.socket:close()
 	end,
-	
-	
+
+
 }
 
 return _ENV;