[Bug 54807] Keil UV4 C51 9.03 (demo) hangs on exit

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54807

--- Comment #20 from Zeb Figura  ---
(In reply to Roman from comment #19)
> Great that you find a reason, but it fixable?

I sent https://gitlab.winehq.org/wine/wine/-/merge_requests/5118. The problem
with that merge request is that, while it's probably reliably good enough for
this application, it isn't really enough to solve the broader problem of
kernel-side code getting into an inconsistent state when threads are
terminated. It needs more thought.