ResourceLoadNotifier should check whether its frame document loader is null
Created attachment 372647 [details] Patch
<rdar://problem/51554792>
Comment on attachment 372647 [details] Patch r=me
Comment on attachment 372647 [details] Patch Clearing flags on attachment: 372647 Committed r246703: <https://trac.webkit.org/changeset/246703>
All reviewed patches have been landed. Closing bug.