disconnect() tcp socket instead of just close()ing it

git-svn-id: file:///home/svn/framework3/trunk@6758 4d416f70-5f16-0410-b530-b9f4589650da

modules/auxiliary/scanner/portscan/tcp.rb

@@ -63,7 +63,7 @@ class Metasploit3 < Msf::Auxiliary
 				)
 				print_status(" TCP OPEN #{ip}:#{port}")
 				report_service(:host => ip, :port => port)
-				s.close
+				disconnect(s)
 			rescue ::Interrupt
 				raise $!
 			rescue ::Rex::ConnectionError