problem: terminating conn doesn't make sense in disconnected protocol

src/dgram.cpp

@@ -116,18 +116,6 @@ int zmq::dgram_t::xsend (msg_t *msg_)
         more_out = false;
     }
     
-    // Close the remote connection if user has asked to do so
-    // by sending zero length message.
-    // Pending messages in the pipe will be dropped (on receiving term- ack)
-    if (msg_->size () == 0) {
-      pipe->terminate (false);
-      int rc = msg_->close ();
-      errno_assert (rc == 0);
-      rc = msg_->init ();
-      errno_assert (rc == 0);
-      pipe = NULL;
-      return 0;
-    }
     // Push the message into the pipe.
     if (!pipe->write (msg_)) {
         errno = EAGAIN;