message: Fix string is no zero-termination
diff: @@ -2131,6 +2131,7 @@ static void php_swoole_server_worker_copy_buffer_addr(swServer *serv, swPipeBuff
  {
  zend_string *worker_buffer = php_swoole_server_worker_get_input_buffer(serv, buffer->info.reactor_id);
  memcpy(buffer->data, &worker_buffer, sizeof(worker_buffer));
  + worker_buffer->val[worker_buffer->len] = '\0';
  }
  static void php_swoole_server_worker_clear_buffer(swServer *serv, swDataHead *info)
  