Re: [PATCH 0/2] MR6401: uxtheme: Optimize drawing by avoiding unneeded TransparentBlt().

[Zhiyi Zhang (＠zhiyi)]

Zhiyi Zhang (@zhiyi) commented about dlls/uxtheme/draw.c:
> POINT dstSize;
>      POINT srcSize;
>      POINT topleft;
> -    BOOL hasAlpha;
> +    BOOL hasAlpha, has_default_trans;

Let's use hasDefaultTransparentColour.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6401#note_80843