Bug 1392396 - Skip xpcshell test_IE_bookmarks.js on Windows for 200+ failures; r=me,test-only

browser/components/migration/tests/unit/xpcshell.ini

@@ -18,7 +18,7 @@ skip-if = os != "win"
 skip-if = os != "win"
 [test_fx_telemetry.js]
 [test_IE_bookmarks.js]
-skip-if = os != "win"
+skip-if = true # bug 1392396
 [test_IE_cookies.js]
 skip-if = os != "win"
 [test_IE7_passwords.js]