message: fix timewheel memory leak.
diff: @@ -1284,6 +1284,14 @@ static int swReactorThread_loop(swThreadParam *param)
  reactor->wait(reactor, NULL);
  //shutdown
  reactor->free(reactor);
  +
  +#ifdef SW_USE_TIMEWHEEL
  + if (reactor->timewheel)
  + {
  + swTimeWheel_free(reactor->timewheel);
  + }
  +#endif
  +
  pthread_exit(0);
  return SW_OK;
  }
  