r105555 changed PLATFORM(WIN) to OS(WIN), but WTF_OS_WIN isn't defined. This should have been changed to OS(WINDOWS). This causes the preprocessor to strip out Win32 data type overrides for deleteOwnedPtr, causing allocations made by Win32 to be deleted by fastmalloc.
Created attachment 124069 [details]
Committed r105970: <http://trac.webkit.org/changeset/105970>