https://bugs.webkit.org/show_bug.cgi?id=229066
<rdar://81850871>
Reviewed by Simon Fraser.
When the whitespace string length is maximumWhitespaceStringLength,
we read from and write to one element past the end of m_codes and
m_indexes. Since we don't need to store codes and indexes for zero
length strings, subtract one from the index we use.
* html/parser/HTMLConstructionSite.cpp:
(WebCore::WhitespaceCache::lookup):
* html/parser/HTMLConstructionSite.h:
Canonical link: https://commits.webkit.org/240498@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@281008 268f45cc-cd09-0410-ab3c-d52691b4dbfc
