REGRESSION (r140229): fast/css/sticky/sticky-top-zoomed.html failing on Apple MountainLion Debug WK2 (Tests)
https://bugs.webkit.org/show_bug.cgi?id=107356

Unreviewed; add failing test to TestExpectations.

* platform/mac-wk2/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140234 268f45cc-cd09-0410-ab3c-d52691b4dbfc