[Bug 13800] Examdiff crashes

http://bugs.winehq.org/show_bug.cgi?id=13800

--- Comment #7 from Nikolay Sivov   2009-06-08 18:16:22 ---
Created an attachment (id=21662)
 --> (http://bugs.winehq.org/attachment.cgi?id=21662)
A test showing crash on Wine comboex handlers. Pass on XP.

(In reply to comment #4)
> After downloading Examdiff Pro 4.0, I can confirm this bug. It is caused by
> COMBOEX_GetText returing NULL in COMBOEX_GetListboxText. Later we do an lstrcpy
> and lstrlen which, on Wine, don't have exception handlers. I will have to check
> where the bug is.

Looks like that. Attached test crash in both message handlers on Wine
(CB_GETLBTEXTLEN and CB_GETLBTEXT). So both of them should be fixed.