Reviewed by Eric Seidel.

        RenderTableSection's setNeedsCellRecalc needs to null check table()
        https://bugs.webkit.org/show_bug.cgi?id=52770

        Tests ::-webkit-scrollbar-corner inside a table.

        * fast/css-generated-content/table-with-scrollbar-corner-expected.txt: Added.
        * fast/css-generated-content/table-with-scrollbar-corner.html: Added.
2011-01-20  James Robinson  <jamesr@chromium.org>

        Reviewed by Eric "Baller" Seidel.

        RenderTableSection's setNeedsCellRecalc needs to null check table()
        https://bugs.webkit.org/show_bug.cgi?id=52770

        Null checks table() before deferencing it in RenderTableSection::setNeedsCellRecalc.
        This can be null during detach().  Test constructed by Eric Seidel.

        Test: fast/css-generated-content/table-with-scrollbar-corner.html

        * rendering/RenderTableSection.cpp:
        (WebCore::RenderTableSection::setNeedsCellRecalc):
        * rendering/RenderTableSection.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76276 268f45cc-cd09-0410-ab3c-d52691b4dbfc