Reviewed by Darin.

        - fix http://bugzilla.opendarwin.org/show_bug.cgi?id=9652
          Assertion failure when changing an RTL table cell to display:none

        Test: fast/table/rtl-cell-display-none-assert.html

        * rendering/RenderTableSection.cpp:
        (WebCore::RenderTableSection::layoutRows): Corrected the index used as
        the last index in the columnPos vector.

LayoutTests:

        Reviewed by Darin.

        - test for http://bugzilla.opendarwin.org/show_bug.cgi?id=9652
          Assertion failure when changing an RTL table cell to display:none

        * fast/table/rtl-cell-display-none-assert-expected.checksum: Added.
        * fast/table/rtl-cell-display-none-assert-expected.png: Added.
        * fast/table/rtl-cell-display-none-assert-expected.txt: Added.
        * fast/table/rtl-cell-display-none-assert.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15101 268f45cc-cd09-0410-ab3c-d52691b4dbfc