- Speculative fix for <rdar://problem/4605532> unrepro crash at cnn.com after upgrading to 10.4.7 (but happening with 10.4.6 too)

        * page/FrameView.cpp: (WebCore::FrameView::layout): Ref's the view during layout, since a recalcStyle could cause the view to be deleted.
        If we get back from recalcStyle, and there's only one ref, return early since the the view will be deleted when we exit layout.
        * page/FrameView.h: (WebCore::FrameView::hasOneRef): Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15193 268f45cc-cd09-0410-ab3c-d52691b4dbfc