robocop style improve, no logic change
robocop style improve, no logic change

wolflee/wechat-rails,TangMonk/wechat,Eric-Guo/wechat,JeeLiu/wechat,Dearest/wechat-1,yxf/wechat,caiqinghua/wechat,zfben/wechat,Eric-Guo/wechat,EndingChaung/wechat,wolflee/wechat-rails,caiqinghua/wechat,Dearest/wechat-1,caiqinghua/wechat,skinnyworm/wechat-rails,Dearest/wechat-1