[PATCH v2 0/1] MR8066: mmdevapi: Avoid race between main and notify thread.

[Bernhard Übelacker (＠bernhardu)]

The gitlab runners where showing a few flaky crashes in e.g. tests:
  dmsynth:dmsynth dmusic:dmusic winmm:midi

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58233

This patch attempts to wait at the DRV_CLOSE call for the thread to finish.

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  v2: mmdevapi: Avoid race between main and notify thread.

https://gitlab.winehq.org/wine/wine/-/merge_requests/8066