message: fix error on macOS
diff: @@ -435,7 +435,7 @@ void swAio_handler_gethostbyname(swAio_event *event)
  int ret;
  #ifndef HAVE_GETHOSTBYNAME2_R
  - SwooleAIO.lock.lock(&SwooleAIO.lock);
  + SwooleG.lock.lock(&SwooleG.lock);
  #endif
  if (event->flags == AF_INET6)
  {
  @@ -447,7 +447,7 @@ void swAio_handler_gethostbyname(swAio_event *event)
  }
  bzero(event->buf, event->nbytes);
  #ifndef HAVE_GETHOSTBYNAME2_R
  - SwooleAIO.lock.unlock(&SwooleAIO.lock);
  + SwooleG.lock.unlock(&SwooleG.lock);
  #endif
  if (ret < 0)
  