Bug 746534 - events/test_selects.html causes crashes or hangs on OS X, disable

accessible/tests/mochitest/events/test_focus_selects.html

@@ -28,6 +28,13 @@
 
     function doTests()
     {
+      // Bug 746534 - File causes crash or hang on OS X
+      if (MAC) {
+        todo(false, "Bug 746534 - test file causes crash or hang on OS X");
+        SimpleTest.finish();
+        return;
+      }
+
       gQueue = new eventQueue();
 
       // first item is focused until there's selection