Layout Test fast/text/international/spaces-combined-in-vertical-text.html is failing

Layout Test fast/text/international/spaces-combined-in-vertical-text.html is failing
https://bugs.webkit.org/show_bug.cgi?id=75787

Patch by Ken Buchanan <kenrb@chromium.org> on 2012-01-19
Reviewed by Simon Fraser.

This is a tweak to my patch in r104322. On some platforms
RenderCombineText::combineText() can abort early during inline
iteration, causing this loop in skipLeadingWhitespace to spin,
hence the layout test timeouts. This patch accounts for that
condition and makes the loop iteration more robust.

No new test because this is fixing a failure on an existing test.

* rendering/RenderBlockLineLayout.cpp:
(WebCore::RenderBlock::LineBreaker::skipLeadingWhitespace):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105423 268f45cc-cd09-0410-ab3c-d52691b4dbfc