message: fix the bug of clear privileges
diff: /*
  * @Author: your name
  * @Date: 2021-09-23 16:55:53
  - * @LastEditTime: 2021-11-12 17:41:33
  + * @LastEditTime: 2021-11-12 20:05:38
  * @LastEditors: Please set LastEditors
  * @Description: In User Settings Edit
  * @FilePath: /gstore/Main/ghttp.cpp
  @@ -4947,6 +4947,7 @@ int clearPrivilege(string username)
  updateSys(update);
  update = "DELETE where {<" + username + "> <has_export_priv> ?x.}";
  updateSys(update);
  + sysrefresh();
  pthread_rwlock_unlock(&users_map_lock);
  return 1;
  