http://bugs.winehq.org/show_bug.cgi?id=20553
--- Comment #12 from Nikolay Sivov bunglehead@gmail.com 2009-11-16 19:47:43 --- (In reply to comment #11)
The first thing to do would be to clear the magic in ImageList_Destroy, otherwise there's no point in checking it. That should be good enough to prevent crashes. It won't prevent the valgrind warning but that's a chromium bug.
At Wine side tested field is cleared now as of commit 7caa61fde648ad7c3275e9d4358ec10b182c2e6b.