fixed ruby 2.0.0 run zc error.
fixed ruby 2.0.0 run zc error.

algo31031/19wu,ywjno/19wu,richard-ma/19wu,winterwhisper/19wu,saberma/19wu,zeus911/19wu,learn-OS/19wu,aptx4869/19wu,19wu/19wu,golden05/19wu,doitian/19wu,bcber/19wu,ngnono/19wu,lytsing/shinebox,jasl/19wu,lite/19wu,JuanitoFatas/19wu,yesmeck/19wu,liufffan/19wu,jalandro/19wu,liufffan/19wu,zeus911/19wu,winterwhisper/19wu,winterwhisper/19wu,lite/19wu,magiccao/19wu,zeus911/19wu,caok/19wu,liyang1069/19wu,wuwx/19wu,imlcl/19wu,diguage/19wu,tengcong/19wu,jalandro/19wu,bkbabydp/19wu,layerssss/19wu,gcbeen/19wu,gcbeen/19wu,Amosiper/19wu,xiaods/19wu,arnkorty/19wu,ngnono/19wu,J-Y/19wu,diguage/19wu,leopku/19wu,huyong36/19wu,blueplanet/19wu,zlx/19wu,richard-ma/19wu,imlcl/19wu,doitian/19wu,jhu-xx/19wu,leopku/19wu,liyang1069/19wu,loveky/19wu,xmonkey/19wu,jasl/19wu,saberma/19wu,bcber/19wu,caok/19wu,astro2linus/19wu,huasiyao/19wu,golden05/19wu,Amosiper/19wu,no2key/19wu,soitun/19wu,ebowsoft/19wu,shiziwen/19wu,Amosiper/19wu,SammyLin/19wu,ebowsoft/19wu,minxr/19wu,xiaods/19wu,wuwx/19wu,lite/19wu,golden05/19wu,windy/19wu,ngnono/19wu,windy/19wu,wuwx/19wu,windy/19wu,jojozoo/19wu,doitian/19wu,shiziwen/19wu,zlx/19wu,soitun/19wu,arnkorty/19wu,liufffan/19wu,ywjno/19wu,aptx4869/19wu,yesmeck/19wu,JuanitoFatas/19wu,liyang1069/19wu,huasiyao/19wu,minxr/19wu,layerssss/19wu,loveky/19wu,soitun/19wu,shiziwen/19wu,jasonZYJ/19wu,bcber/19wu,huasiyao/19wu,huyong36/19wu,layerssss/19wu,no2key/19wu,richard-ma/19wu,algo31031/19wu,bkbabydp/19wu,minxr/19wu,bkbabydp/19wu,learn-OS/19wu,no2key/19wu,SammyLin/19wu,19wu/19wu,jalandro/19wu,fusky/19wu