message: Fix heartbeat timeout null ptr error
diff: @@ -624,6 +624,7 @@ static void swReactorProcess_onTimeout(swTimer *timer, swTimer_node *tnode)
  }
  #endif
  notify_ev.fd = fd;
  + notify_ev.socket = conn->socket;
  notify_ev.reactor_id = conn->reactor_id;
  swReactorProcess_onClose(reactor, &notify_ev);
  }
  