[Bug 52511] Hemekonomi hangs on exit due to deadlock between loader_section and Win16 mutex

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52511

--- Comment #15 from Fabian Maurer  ---
Created attachment 73528
  --> https://bugs.winehq.org/attachment.cgi?id=73528
Patch so fix the issue

Code flow is like follows:

- DOSVM_Exit -> RtlExitUserThread -> LdrShutdownThread
- acquire loader lock
- send DLL_THREAD_DETACH to imm32
- - calls DestroyWindow on its window
- - WM_DESTROY is handled asynchonously!
- send DLL_THREAD_DETACH to krnl386.exe 
- - TASK_ExitTask
- -  try get win16 lock, is blocked by ime32

meanwhile, at ime32

- handles WM_DESTROY
- already have win16 lock from user32
- __wine_ime_wnd_proc (WM_DESTROY) -> imm_couninit_thread ->
CoRevokeInitializeSpy
- LdrGetProcedureAddress (want CoRevokeInitializeSpy)
- try get loader_lock, is blocked

Solution is to wait in ime32 DllMain until the cleanup as happened, aka
CoRevokeInitializeSpy has finished.

Attached a patch that should fix the issue, could you please confirm this works
for you as well?