message: Fix Server::getWorkerId()
diff: @@ -3880,7 +3880,7 @@ static PHP_METHOD(swoole_server, getWorkerPid) {
  if (!worker) {
  RETURN_FALSE;
  }
  - RETURN_LONG(serv->get_worker(worker_id)->pid);
  + RETURN_LONG(worker->pid);
  }
  static PHP_METHOD(swoole_server, getManagerPid) {
  