Remove error.h requirement, make it works on MacOS
Remove error.h requirement, make it works on MacOS

Qihoo360/phptrace,silkCut/phptrace,Qihoo360/phptrace,monque/phptrace,silkCut/phptrace,monque/phptrace,silkCut/phptrace,monque/phptrace,Qihoo360/phptrace