gyp: fix sntex error
gyp: fix sntex error

PR-URL: https://github.com/nodejs/node-gyp/pull/1333
Reviewed-By: Refael Ackermann <0604a90ccdde7a0adfa2ff3857349859a7209740@gmail.com>

refack/node-gyp,TooTallNate/node-gyp,TooTallNate/node-gyp,TooTallNate/node-gyp,refack/node-gyp,refack/node-gyp,refack/node-gyp,TooTallNate/node-gyp,refack/node-gyp,TooTallNate/node-gyp