[Bug 38241] Open General crashes when exiting.

https://bugs.winehq.org/show_bug.cgi?id=38241

--- Comment #1 from Sagawa <sagawa.aki+winebugs(a)gmail.com> ---
Created attachment 51049
  --> https://bugs.winehq.org/attachment.cgi?id=51049
proposed patch

>From my inspection, this is MCI Mpegvideo driver, mciqtz32's issue.
Generally, mci "open" and "close" can call in different threads for the same
device.
Therefore, the following case triggers 'CoUninitialize Mismatch' in the current
implementation.
1. thread A, open foo.mp3 with MPEGVideo driver. i.e. 'open foo.mp3 alias foo
type MPEGVideo'. MCIQTZ_mciOpen() silently calls CoInitialize() for thread A.
2. thread A, play foo.
3. thread B, close foo. MCIQTZ_mciClose() implicitly calls CoUnintialize() for
thread B though the thread is not initialized.

Attached proposed patch introduces a task thread to avoid above situations, and
DriverProc passes the arguments to the thread.

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