[PATCH v2 0/4] MR5584: mf: Fixes the missing MESessionClosed event in various scenarios.

[Brendan McGrath (＠redmcg)]

Killsquad sends a MESessionClose at various times depending on user input. It always expects a MESessionClosed event and will wait indefinitely if not received. There are currently a number of scenarios where we don't report the MESessionClose event. This MR attempts to fix that.

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  v2: mf: Handle Source/Sink shutdown whilst waiting for an event.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/5584