Disable this test on Windows (again); it seems to crash or hang on Tinderbox.

layout/reftests/bugs/reftest.list

@@ -192,7 +192,7 @@ random-if(MOZ_WIDGET_TOOLKIT=="gtk2") == 333970-1.html 333970-1-ref.html # bug 3
 == 346774-1b.html 346774-1-ref.html
 == 346774-1c.html 346774-1-ref.html
 == 347348-1.xhtml 347348-1-ref.xhtml
-== 347496-1.xhtml 347496-1-ref.xhtml
+skip-if(MOZ_WIDGET_TOOLKIT=="windows") == 347496-1.xhtml 347496-1-ref.xhtml
 == 347912-1.html 347912-1-ref.html
 == 348049-1.xhtml 348049-1-ref.xhtml
 == 348516-1.html 348516-1-ref.html