Add /third_party/syzygy/binaries to .gitignore

This should have been done in
https://webrtc-codereview.appspot.com/2381004

BUG=
R=henrika@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/10999004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5823 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed