message: fix defer task bugs
diff: @@ -33,7 +33,7 @@ static void swReactor_defer_timer_callback(swTimer *timer, swTimer_node *tnode)
  {
  defer_task *cb = (defer_task *) tnode->data;
  cb->callback(cb->data);
  - sw_free(cb);
  + delete cb;
  }
  void swReactor_defer_task_create(swReactor *reactor)
  