Re: [PATCH v4 0/3] MR3351: mfmediaengine: Implement RemoveAllEffects().

[Nikolay Sivov (＠nsivov)]

This now managed to hang for me, once. With:

```
00d4:fixme:mfplat:bytestream_file_Close 00000000008F7320
0140:err:sync:RtlpWaitForCriticalSection section 00000000008FD9F0 "../../wine-git/dlls/winegstreamer/media_source.c: cs" wait timed out in thread 0140, blocked by 00d4, retrying (60 sec)
0114:err:sync:RtlpWaitForCriticalSection section 00000000008F85C0 (null) wait timed out in thread 0114, blocked by 00d4, retrying (60 sec)
```