Fix a long-standing issue with Resolv.getaddress() being broken on Ruby 1.9.1 Windows

git-svn-id: file:///home/svn/framework3/trunk@10544 4d416f70-5f16-0410-b530-b9f4589650da

lib/rex/socket.rb

@@ -135,11 +135,12 @@ module Socket
 	# Wrapper for Resolv.getaddress that takes special care to see if the
 	# supplied address is already a dotted quad, for instance.  This is
 	# necessary to prevent calls to gethostbyaddr (which occurs on windows).
-	# These calls can be quite slow.
+	# These calls can be quite slow. This also fixes an issue with the
+	# Resolv.getaddress() call being non-functional on Ruby 1.9.1 (Win32).
 	#
 	def self.getaddress(addr)
 		begin
-			dotted_ip?(addr) ? addr : Resolv.getaddress(addr)
+			dotted_ip?(addr) ? addr : self.addr_ntoa( ::Socket.gethostbyname(addr)[3] )
 		rescue ::ArgumentError # Win32 bug
 			nil
 		end