http://bugs.winehq.org/show_bug.cgi?id=20548
--- Comment #3 from Alexandre Julliard julliard@winehq.org 2009-11-11 05:39:32 --- The memory is freed once the user APC routine is called. If the app exits without doing an alertable wait then it won't get freed. Fixing this would be quite complicated since we can't free memory inside a signal handler.