Fix RegExp. 
Fix RegExp. 

For WeChat login 301 redirection, which could be 'wx2.qq.com' .
lileixuan/electronic-wechat,geeeeeeeeek/electronic-wechat,geeeeeeeeek/electronic-wechat,lileixuan/electronic-wechat,lileixuan/electronic-wechat,geeeeeeeeek/electronic-wechat