[PATCH 0/1] MR9876: win32u: Use surfaces for client area if the backend doesn't support PutImage.

[Rémi Bernon (＠rbernon)]

This is the case on macOS and some other drivers. It will not change
anything on X11 which supports drawing to the window directly.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/9876