[PATCH] gdiplus: Avoid unnecessary post-to-pre-multiplied alpha conversions in GdipDrawImagePointsRect

[Vincent Povirk]

On Tue, Mar 31, 2015 at 9:05 AM, Andrew Eikum <aeikum at codeweavers.com> wrote:
> +    if (bg_alpha == 0) return fg;

This doesn't seem right. Foreground is premultiplied, but we expect
the result to not be premultiplied.