REGRESSION(r141070): Broke debug build
https://bugs.webkit.org/show_bug.cgi?id=108159

Unreviewed build fix.

* html/parser/HTMLDocumentParser.cpp:
(WebCore::HTMLDocumentParser::pumpTokenizer):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141071 268f45cc-cd09-0410-ab3c-d52691b4dbfc