message: Fix: memory leak
  Similar to Coverity CID
diff: @@ -84,6 +84,7 @@ int swReactorEpoll_create(swReactor *reactor, int max_event_num)
  if (reactor_object->events == NULL)
  {
  swWarn("malloc[1] failed.");
  + sw_free(reactor_object);
  return SW_ERR;
  }
  //epoll create
  @@ -91,6 +92,7 @@ int swReactorEpoll_create(swReactor *reactor, int max_event_num)
  if (reactor_object->epfd < 0)
  {
  swWarn("epoll_create failed. Error: %s[%d]", strerror(errno), errno);
  + sw_free(reactor_object);
  return SW_ERR;
  }
  //binding method
  