Unreviewed, rolling out r140554.
http://trac.webkit.org/changeset/140554
https://bugs.webkit.org/show_bug.cgi?id=108057

Caused tables/table-section-overflow-clip-crash.html and
bug2479-5.html to crash. (Requested by keishi on #webkit).

Patch by Sheriff Bot <webkit.review.bot@gmail.com> on 2013-01-28

* rendering/RenderBox.cpp:
(WebCore::RenderBox::minPreferredLogicalWidth):
(WebCore::RenderBox::maxPreferredLogicalWidth):
* rendering/mathml/RenderMathMLOperator.cpp:
(WebCore::RenderMathMLOperator::computePreferredLogicalWidths):
* rendering/mathml/RenderMathMLRoot.cpp:
(WebCore::RenderMathMLRoot::computePreferredLogicalWidths):
* rendering/mathml/RenderMathMLRow.cpp:
(WebCore::RenderMathMLRow::computePreferredLogicalWidths):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140950 268f45cc-cd09-0410-ab3c-d52691b4dbfc