Bug 1235183. Part 5 - per comment 35, cancel existing |mChannelLoader| in AbortExistingLoads(). r=cpearce

MozReview-Commit-ID: 27DZC8rwAJ5

--HG--
extra : rebase_source : 71f7798675c2d6d9521a2615a5d0292bce107a0a

dom/html/HTMLMediaElement.cpp

@@ -873,6 +873,11 @@ void HTMLMediaElement::AbortExistingLoads()
   // with a different load ID to silently be cancelled.
   mCurrentLoadID++;
 
+  if (mChannelLoader) {
+    mChannelLoader->Cancel();
+    mChannelLoader = nullptr;
+  }
+
   bool fireTimeUpdate = false;
 
   // When aborting the existing loads, empty the objects in audio track list and