[PATCH 0/1] MR9754: win32u/tests: Use dynamically loaded D3DKMTOpenKeyedMutexFromNtHandle.

[Bernhard Übelacker]

Fixes d73e6d25c4, where I missed to replace the actual function call of `pD3DKMTOpenKeyedMutexFromNtHandle`.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/9754