Simplify code of util-path.js
Simplify code of util-path.js

JeffLi1993/seajs,kaijiemo/seajs,sheldonzf/seajs,angelLYK/seajs,eleanors/SeaJS,zaoli/seajs,coolyhx/seajs,AlvinWei1024/seajs,lianggaolin/seajs,Gatsbyy/seajs,uestcNaldo/seajs,wenber/seajs,121595113/seajs,seajs/seajs,tonny-zhang/seajs,chinakids/seajs,mosoft521/seajs,kaijiemo/seajs,uestcNaldo/seajs,AlvinWei1024/seajs,moccen/seajs,FrankElean/SeaJS,coolyhx/seajs,baiduoduo/seajs,lianggaolin/seajs,13693100472/seajs,judastree/seajs,121595113/seajs,lee-my/seajs,liupeng110112/seajs,longze/seajs,lee-my/seajs,judastree/seajs,imcys/seajs,LzhElite/seajs,zwh6611/seajs,PUSEN/seajs,zwh6611/seajs,baiduoduo/seajs,JeffLi1993/seajs,MrZhengliang/seajs,treejames/seajs,baiduoduo/seajs,FrankElean/SeaJS,jishichang/seajs,Lyfme/seajs,eleanors/SeaJS,hbdrawn/seajs,liupeng110112/seajs,AlvinWei1024/seajs,Lyfme/seajs,evilemon/seajs,Gatsbyy/seajs,PUSEN/seajs,sheldonzf/seajs,wenber/seajs,miusuncle/seajs,jishichang/seajs,ysxlinux/seajs,jishichang/seajs,angelLYK/seajs,miusuncle/seajs,yuhualingfeng/seajs,sheldonzf/seajs,PUSEN/seajs,evilemon/seajs,chinakids/seajs,FrankElean/SeaJS,angelLYK/seajs,liupeng110112/seajs,zwh6611/seajs,longze/seajs,twoubt/seajs,mosoft521/seajs,mosoft521/seajs,twoubt/seajs,LzhElite/seajs,MrZhengliang/seajs,coolyhx/seajs,uestcNaldo/seajs,yuhualingfeng/seajs,kuier/seajs,lianggaolin/seajs,imcys/seajs,evilemon/seajs,ysxlinux/seajs,seajs/seajs,lee-my/seajs,yern/seajs,moccen/seajs,lovelykobe/seajs,Gatsbyy/seajs,13693100472/seajs,treejames/seajs,miusuncle/seajs,tonny-zhang/seajs,hbdrawn/seajs,ysxlinux/seajs,imcys/seajs,longze/seajs,LzhElite/seajs,kuier/seajs,treejames/seajs,twoubt/seajs,kuier/seajs,judastree/seajs,lovelykobe/seajs,tonny-zhang/seajs,eleanors/SeaJS,yern/seajs,zaoli/seajs,wenber/seajs,yuhualingfeng/seajs,Lyfme/seajs,yern/seajs,MrZhengliang/seajs,lovelykobe/seajs,seajs/seajs,moccen/seajs,zaoli/seajs,kaijiemo/seajs,JeffLi1993/seajs