REGRESSION(r201385) ASSERT in WebCore::HTMLMediaElement::updateActive…

…TextTrackCues + 5688

https://bugs.webkit.org/show_bug.cgi?id=158164
<rdar://problem/26498634>

Reviewed by Jer Noble.

No new tests, this prevents an assert in existing tests.

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::~HTMLMediaElement): Call beginIgnoringTrackDisplayUpdateRequests
  so we avoid doing unnecessary work triggered by destruction.


Canonical link: https://commits.webkit.org/176366@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@201574 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/ChangeLog

@@ -1,3 +1,17 @@
+2016-06-01  Eric Carlson  <eric.carlson@apple.com>
+
+        REGRESSION(r201385) ASSERT in WebCore::HTMLMediaElement::updateActiveTextTrackCues + 5688
+        https://bugs.webkit.org/show_bug.cgi?id=158164
+        <rdar://problem/26498634>
+
+        Reviewed by Jer Noble.
+
+        No new tests, this prevents an assert in existing tests.
+
+        * html/HTMLMediaElement.cpp:
+        (WebCore::HTMLMediaElement::~HTMLMediaElement): Call beginIgnoringTrackDisplayUpdateRequests
+          so we avoid doing unnecessary work triggered by destruction.
+
 2016-06-01  Dean Jackson  <dino@apple.com>
 
         Fix iOS build.

Source/WebCore/html/HTMLMediaElement.cpp

@@ -497,6 +497,7 @@ HTMLMediaElement::~HTMLMediaElement()
 {
     LOG(Media, "HTMLMediaElement::~HTMLMediaElement(%p)", this);
 
+    beginIgnoringTrackDisplayUpdateRequests();
     allMediaElements().remove(this);
 
     m_asyncEventQueue.close();