[PATCH v2 0/1] MR8999: win32u: Fix garbled 24-bit bitmap rendering

[Zowie van Dillen (＠zowie)]

Fixes https://bugs.winehq.org/show_bug.cgi?id=58620

I've made this a separate MR from !8969 because that MR contains a lot of highly debatable architectural decisions (such as FAKE_16BIT_MEMDC_PIXEL_FORMAT and all of its special case branches). This MR is very minimal and straight to the point.

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  v2: win32u: Fix garbled 24-bit bitmap rendering
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/8999