catch IOError that may be raised when closing a socket that is already closed, fixes #61

git-svn-id: file:///home/svn/framework3/trunk@5074 4d416f70-5f16-0410-b530-b9f4589650da

lib/rex/services/local_relay.rb

@@ -263,9 +263,12 @@ protected
 	def close_relay(relay)
 		self.rfds.delete(relay.listener)
 		self.relays.delete(relay.name)
-			
-		relay.shutdown 
-		relay.close
+		
+		begin
+			relay.shutdown 
+			relay.close
+		rescue IOError
+		end
 	end
 
 	#