Re: [PATCH 0/4] MR9348: comctl32/imagelist: Pre-multiply rgb by the alpha channel in add_dib_bits for v6.

[Ziqing Hui (＠zhui)]

> Let's not make changes to both v5 and v6 at the same time. It would be easier for review if you could split them.

In fact, although I use `#if __WINE_COMCTL32_VERSION == 5` here, it only changes v6. For v6 I added code that premultiply alpha channel in `add_dib_bits`, so we need to remove this line for v6. To keep it the same as before for v5, I added a v5 guard.
> Also, try to avoid the \__WINE_COMCTL32_VERSION checks in the middle of the function. See if you could move them into a helper.

OK, I'll try to move them to helpers.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/9348#note_122483