Re: [PATCH 0/1] MR3974: winemac.drv: Ensure user-land callback can access app_icon results.

[eric pouech (＠epo)]

what happened (to make the link between bugzilla entry and this fix):

* psapi tests expects msinfo32 (in wow64) to stay running while performing a couple of tests
* msinfo32 (in new wow64) was not displaying any window (about shell) and returned immediately
* msinfo32 (in new wow64) failed to create its window as the builtin classes where not registered (esp. the DIALOG one here)
* this happens because of a crash in pSetForeGroundWindow() in a user mode callback, which was silently ignored (actually reported in warn:seh, but potentially overseen)

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https://gitlab.winehq.org/wine/wine/-/merge_requests/3974#note_47062