message: fix the bug of backup
diff: /*
  * @Author: liwenjie
  * @Date: 2021-09-23 16:55:53
  - * @LastEditTime: 2021-12-15 11:07:17
  + * @LastEditTime: 2022-01-17 11:55:52
  * @LastEditors: Please set LastEditors
  * @Description: In User Settings Edit
  * @FilePath: /gstore/Main/ghttp.cpp
  @@ -2412,7 +2412,7 @@ void backup_thread_new(const shared_ptr<HttpServer::Response>& response,string d
  pthread_rwlock_unlock(&(it_already_build->second->db_lock));
  return;
  }
  - if(path[0] == '.') path = path.substr(1, path.length() - 1);
  + //if(path[0] == '.') path = path.substr(1, path.length() - 1);
  //if(path[0] == '/') path = path.substr(1, path.length() - 1);
  if(path[path.length() - 1] == '/') path = path.substr(0, path.length() - 1);
  cout<<"backup path:"<<path<<endl;
  