fix some bugs of QQMixin
fix some bugs of QQMixin

ZhQYuan/sinaweibopy,JayYangSS/sinaweibopy,fiona22/sinaweibopy,wandouqiang/sinaweibopy,qazmichaelgw/sinaweibopy,michaelliao/sinaweibopy,lynnegithub/sinaweibopy,xingguang2013/sinaweibopy,shengnwen/sinaweibopy,frankblack7410/sinaweibopy,CodeJuan/sinaweibopy,weixiaofeng1987/test,foolself/sinaweibopy,ymero/sinaweibopy,virqin/sinaweibopy,liujianpc/sinaweibopy