Remove trailing whitespace in lua files

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

scripts/svn-brute.nse

@@ -16,7 +16,7 @@ Performs brute force password auditing against Subversion source code control se
 -- @output
 -- PORT     STATE SERVICE REASON
 -- 3690/tcp open  svn     syn-ack
--- | svn-brute:  
+-- | svn-brute:
 -- |   Accounts
 -- |_    patrik:secret => Login correct
 --
@@ -44,10 +44,10 @@ categories = {"intrusive", "brute"}
 
 portrule = shortport.port_or_service(3690, "svnserve", "tcp", "open")
 
-svn = 
+svn =
 {
 	svn_client = "nmap-brute v0.1",
-	
+
 	new = function(self, host, port, repo)
 		local o = {}
        	setmetatable(o, self)
@@ -62,11 +62,11 @@ svn =
 	--- Connects to the SVN - repository
 	--
 	-- @return status true on success, false on failure
-	-- @return err string containing an error message on failure 
+	-- @return err string containing an error message on failure
 	connect = function(self)
 		local repo_url = ( "svn://%s/%s" ):format(self.host.ip, self.repo)
 		local status, msg
-		
+
 		self.socket = nmap.new_socket()
 
 		local result
@@ -74,23 +74,23 @@ svn =
 		if( not(status) ) then
 			return false, result
 		end
-		
+
 		status, msg = self.socket:receive_bytes(1)
 		if ( not(status) or not( msg:match("^%( success") ) ) then
 			return false, "Banner reports failure"
 		end
-		
+
 		msg = ("( 2 ( edit-pipeline svndiff1 absent-entries depth mergeinfo log-revprops ) %d:%s %d:%s ( ) ) "):format( #repo_url, repo_url, #self.svn_client, self.svn_client )
 		status = self.socket:send( msg )
 		if ( not(status) ) then
 			return false, "Send failed"
 		end
-	
+
 		status, msg = self.socket:receive_bytes(1)
 		if ( not(status) ) then
 			return false, "Receive failed"
 		end
-		
+
 		if ( msg:match("%( success") ) then
 			local tmp = msg:match("%( success %( %( ([%S+%s*]-) %)")
 			if ( not(tmp) ) then return false, "Failed to detect authentication" end
@@ -101,9 +101,9 @@ svn =
 			return false
 		end
 
-		return true		
+		return true
 	end,
-	
+
 	--- Attempts to login to the SVN server
 	--
 	-- @param username string containing the login username
@@ -113,31 +113,31 @@ svn =
 	login = function( self, username, password )
 		local status, msg
 		local challenge, digest
-		
+
 		if ( self.auth_mech["CRAM-MD5"] ) then
 			msg = "( CRAM-MD5 ( ) ) "
 			status = self.socket:send( msg )
-		
+
 			status, msg = self.socket:receive_bytes(1)
 			if ( not(status) ) then
 				return false, "error"
 			end
-		
+
 			challenge = msg:match("<.+>")
-		
+
 			if ( not(challenge) ) then
 				return false, "Failed to read challenge"
 			end
-		
+
 			digest = stdnse.tohex(openssl.hmac('md5', password, challenge))
 			msg = ("%d:%s %s "):format(#username + 1 + #digest, username, digest)
 			self.socket:send( msg )
-		
+
 			status, msg = self.socket:receive_bytes(1)
 			if ( not(status) ) then
 				return false, "error"
 			end
-			
+
 			if ( msg:match("Username not found") ) then
 				return false, "Username not found"
 			elseif ( msg:match("success") ) then
@@ -148,21 +148,21 @@ svn =
 		else
 			return false, "Unsupported auth-mechanism"
 		end
-		
+
 	end,
-	
+
 	--- Close the SVN connection
 	--
 	-- @return status true on success, false on failure
 	close = function(self)
 		return self.socket:close()
 	end,
-	
+
 }
 
 
 Driver =
-{		
+{
 	new = function(self, host, port, invalid_users )
 		local o = {}
        	setmetatable(o, self)
@@ -173,10 +173,10 @@ Driver =
 		o.invalid_users = invalid_users
 		return o
 	end,
-	
+
 	connect = function( self )
 		local status, msg
-		
+
 		self.svn = svn:new( self.host, self.port, self.repo )
 		status, msg = self.svn:connect()
 		if ( not(status) ) then
@@ -185,14 +185,14 @@ Driver =
 			err:setRetry( true )
 			return false, err
 		end
-		
+
 		return true
 	end,
-	
+
 	disconnect = function( self )
 		self.svn:close()
 	end,
-	
+
 	--- Attempts to login to the SVN server
 	--
 	-- @param username string containing the login username
@@ -201,12 +201,12 @@ Driver =
 	-- @return brute.Error object on failure
 	--         brute.Account object on success
 	login = function( self, username, password )
-		local status, msg		
-		
+		local status, msg
+
 		if ( self.invalid_users[username] ) then
 			return false, brute.Error:new( "User is invalid" )
 		end
-	
+
 		status, msg = self.svn:login( username, password )
 
 		if ( not(status) and msg:match("Username not found") ) then
@@ -218,7 +218,7 @@ Driver =
 			return false, brute.Error:new( "Incorrect password" )
 		end
 	end,
-	
+
 	--- Verifies whether the repository is valid
 	--
 	-- @return status, true on success, false on failure
@@ -240,26 +240,26 @@ Driver =
 
 
 action = function(host, port)
-	local status, accounts 
-	
+	local status, accounts
+
 	local repo = stdnse.get_script_args('svn-brute.repo')
 	local force = stdnse.get_script_args('svn-brute.force')
-	
+
 	if ( not(repo) ) then
 		return "No repository specified (see svn-brute.repo)"
 	end
-	
+
 	local svn = svn:new( host, port, repo )
 	local status = svn:connect()
 
 	if ( status and svn.auth_mech["ANONYMOUS"] and not(force) ) then
 		return "  \n  Anonymous SVN detected, no authentication needed"
 	end
-	
+
 	if ( not(svn.auth_mech) or not( svn.auth_mech["CRAM-MD5"] ) ) then
 		return "  \n  No supported authentication mechanisms detected"
 	end
-	
+
 	local invalid_users = {}
 	local engine = brute.Engine:new(Driver, host, port, invalid_users)
 	engine.options.script_name = SCRIPT_NAME