Bug 1143650: Update webref failure links r=karlt

--HG--
extra : rebase_source : cbfe468eee88c5ebca5f344ef439e12130a221ba

testing/web-platform/meta/media-source/mediasource-duration.html.ini

@@ -1,7 +1,7 @@
 [mediasource-duration.html]
   type: testharness
   disabled:
-    if (os == "win") and (version != "5.1.2600"): https://bugzilla.mozilla.org/show_bug.cgi?id=1128332
+    if (os == "win") and (version != "5.1.2600"): https://bugzilla.mozilla.org/show_bug.cgi?id=1143650
   [Test seek starts on duration truncation below currentTime]
     expected:
       if (os == "win") and (version != "5.1.2600"): PASS
@@ -15,7 +15,5 @@
     expected: FAIL
 
   [Test setting same duration multiple times does not fire duplicate durationchange]
-    disabled:
-      if (os == "win") and (version != "5.1.2600"): https://bugzilla.mozilla.org/show_bug.cgi?id=1128332
     expected: FAIL