http://bugs.winehq.org/show_bug.cgi?id=20553
--- Comment #7 from Dan Kegel dank@kegel.com 2009-11-13 22:58:30 --- Thanks for the analysis! I see this is not the first time this has come up; see http://www.mail-archive.com/wine-devel@winehq.com/msg15702.html
(I'll close this as invalid once I verify the fix, since it looks like an app error, but that doesn't mean we shouldn't harden our code if we can.)