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bdakin@apple.com authored
https://bugs.webkit.org/show_bug.cgi?id=114214 -and corresponding- <rdar://problem/13208616> Reviewed by Anders Carlsson. When a page is restoring from the page cache, the mainFrame can have a null Document. So we should null-check the Document here. * page/scrolling/ScrollingCoordinator.cpp: (WebCore::ScrollingCoordinator::mainThreadScrollingReasons): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147949 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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