[PATCH 0/1] MR7616: win32u: Fix alpha blending in X11DRV_UpdateLayeredWindow.

[Rémi Bernon]

Based on a patch by Dmitry Timoshkov.

Supersedes https://gitlab.winehq.org/wine/wine/-/merge_requests/7344

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https://gitlab.winehq.org/wine/wine/-/merge_requests/7616