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adele@apple.com authored
Fix for <rdar://problem/5591583> CrashTracer: [USER] 157 in Mail crashes at -[WebCoreFrameBridge reapplyStylesForDeviceType:] * page/Frame.cpp: Add nil checks since every other caller of requestCSSStyleSheet checks for nil. (WebCore::UserStyleSheetLoader::UserStyleSheetLoader): (WebCore::UserStyleSheetLoader::~UserStyleSheetLoader): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@28064 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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