[PATCH 0/1] MR10381: mmdevapi: Don't assume WAVEFORMATEX is a WAVEFORMATEXTENSIBLE.

[Yuxuan Shui (＠yshui)]

IAudioClient_IsFormatSupported is given a WAVEFORMATEX, we can't assume it's a WAVEFORMATEXTENSIBLE
without checking its cbSize. For example, WINMM_TestFormat only passes a WAVEFORMATEX.

Found by ASan.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/10381