[PATCH v2 0/2] MR2690: mfreadwrite/tests: Add more tests for MFCreateSinkWriterFromURL.

[Ziqing Hui (＠zhui)]

The tests shows that, for sink writer created by MFCreateSinkWriterFromURL,
we are not able to grab the media sink object immediately after the creation,
unless the media sink object can be created without setting media type(MP3, ASF).

--
  v2: mfreadwrite/tests: Test getting media sink immediately after MFCreateSinkWriterFromURL.
      mfreadwrite/tests: Add more tests for MFCreateSinkWriterFromURL.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/2690