Update friend list completed. Entries: 301 卡住

```
2021-01-29 22:53:29,647 [DEBUG]: efb_telegram_master.db (db.__init__; db.py:182)
Loading database...
2021-01-29 22:53:29,648 [DEBUG]: efb_telegram_master.db (db.__init__; db.py:185)
Database loaded.
2021-01-29 22:53:29,649 [DEBUG]: efb_telegram_master.db (db.__init__; db.py:191)
Checking database migration...
2021-01-29 22:53:29,649 [DEBUG]: peewee (peewee.execute_sql; peewee.py:3117)
('SELECT name FROM "main".sqlite_master WHERE type=? ORDER BY name', ('table',))
2021-01-29 22:53:29,650 [DEBUG]: peewee (peewee.execute_sql; peewee.py:3117)
('PRAGMA "main".table_info("msglog")', None)
2021-01-29 22:53:29,651 [DEBUG]: peewee (peewee.execute_sql; peewee.py:3117)
('PRAGMA "main".table_info("slavechatinfo")', None)
2021-01-29 22:53:29,651 [DEBUG]: efb_telegram_master.db (db.__init__; db.py:205)
Database migration finished...
2021-01-29 22:53:29,651 [DEBUG]: efb_telegram_master.chat_object_cache (chat_object_cache.__init__; chat_object_cache.py:32)
Loading chats from slave channels...
2021-01-29 22:53:29,652 [DEBUG]: efb_telegram_master.chat_object_cache (chat_object_cache.__init__; chat_object_cache.py:37)
Loading chats from 'milkice.qq'...
2021-01-29 22:53:29,683 [DEBUG]: efb_qq_slave.Clients.CoolQ.CoolQ (CoolQ.update_friend_list; CoolQ.py:802)
Update friend list completed. Entries: 301
```
日志如上(截取相关部分)
手动按ctrl c可以继续运行但如日志所说并不会获取到friend list
使用的是mirai的onebot插件，是不支持这个`Update friend list`吗，这样的话或许可以加一个判断？每次重启需要手按一下不太方便

related #48