Fix typo that added gcc ignore flags on non-gcc compilers
Fix typo that added gcc ignore flags on non-gcc compilers

closes gh-49

swn1/pyzmq,Mustard-Systems-Ltd/pyzmq,swn1/pyzmq,yyt030/pyzmq,dash-dash/pyzmq,ArvinPan/pyzmq,dash-dash/pyzmq,ArvinPan/pyzmq,Mustard-Systems-Ltd/pyzmq,ArvinPan/pyzmq,Mustard-Systems-Ltd/pyzmq,caidongyun/pyzmq,caidongyun/pyzmq,yyt030/pyzmq,yyt030/pyzmq,dash-dash/pyzmq,caidongyun/pyzmq,swn1/pyzmq