UDT: closing messageOut results into too fast closing. Don't close it for now as an ugly bush fix.

udt/udtsocket.go

@@ -303,7 +303,9 @@ func (s *udtSocket) Close() error {
 
 	s.isClosed = true
 
-	close(s.messageOut)
+	// closing messageOut was a signal supposed to tell the send code to initiate shutdown. However, it closes too fast before all data is transferred.
+	// The entire UDT code is a piece of !@#$ and needs a rewrite.
+	//close(s.messageOut)
 	return nil
 }