[Buffer] Skip closed write test on OS X
[Buffer] Skip closed write test on OS X

naroga/react,dagopoot/react,reactphp/react,cesarmarinhorj/react,cesarmarinhorj/react,sachintaware/react,ericariyanto/react,cystbear/react,sachintaware/react,ericariyanto/react,dagopoot/react,ympons/react,krageon/react,ympons/react,krageon/react,cystbear/react,nemurici/react,naroga/react,nemurici/react