Bug 1347829 - If the timestamp "<00:00.005" missing the last ">" character, we still parse it. r=alwu

MozReview-Commit-ID: KzW1uTSyDE

--HG--
extra : rebase_source : cac3f211d9b89f9cc89fe8cbaf7bf90d66ff7e72

dom/media/webvtt/vtt.jsm

@@ -404,7 +404,7 @@ Cu.import('resource://gre/modules/Services.jsm');
           // Otherwise just ignore the end tag.
           continue;
         }
-        var ts = collectTimeStamp(t.substr(1, t.length - 2));
+        var ts = collectTimeStamp(t.substr(1, t.length - 1));
         var node;
         if (ts) {
           // Timestamps are lead nodes as well.