[Bug] Caused infinite redirect for battlenet in china

[SettingDust]

When login, there will be a url like https://www.battlenet.com.cn/login/zh/?ref=https://oauth.battlenet.com.cn/authorize?response_type%3Dcode%26client_id%3Dxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%26scope%3Daccount.full%2520commerce.virtualcurrency.full%2520commerce.virtualcurrency.basic%2520commerce.entitlements%2520commerce.entitlements:ack%2520account.groups.full.privileged%26state%3Dxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx%253D%26redirect_uri%3Dhttps://account.battlenet.com.cn/callback/oauth2/code/account-settings&app=oauth&opt

After clear: https://www.battlenet.com.cn/login/zh/?app=oauth&opt=