Fix: detect app mode error when use mode_normal
Fix: detect app mode error when use mode_normal

maxzhang/thinkjs,Qihoo360/thinkjs,akira-cn/thinkjs,75team/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,snadn/thinkjs,thinkjs/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,75team/thinkjs,75team/thinkjs