[PATCH v2 0/2] MR6783: winegstreamer: Fix a memory/resource leak.

[Conor McCarthy (＠cmccarthy)]

References held by contained stream objects must use an internal refcount, otherwise they prevent release of the media source if Start() and Shutdown() are not called.

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  v2: winegstreamer: Introduce an internal refcount in media source objects.
      mfplat/tests: Test the refcount before the media source is released.

https://gitlab.winehq.org/wine/wine/-/merge_requests/6783