Bug 1456855 - Fix syntax for test layout/inspector/tests/chrome/test_fontVariationsAPI.xul r=aryx

layout/inspector/tests/chrome/chrome.ini

@@ -25,7 +25,7 @@ support-files =
   test_fontFeaturesAPI.css
   DejaVuSans.ttf
 [test_fontVariationsAPI.xul]
-skip-if = ((os == 'win' && bits!=64) || (os=='linux' && bits==32) && os == 'mac') # bug 1456855, bug 1456856
+skip-if = ((os == 'win' && bits!=64) || (os=='linux' && bits==32) || os == 'mac') # bug 1456855, bug 1456856
 support-files =
   test_fontVariationsAPI.css
 [test_fontFaceGeneric.xul]