Re: [PATCH v13 0/5] MR10673: oleaut32: Fix Null handling in three-valued logical ops.

[Jacek Caban (＠jacek)]

Jacek Caban (@jacek) commented about dlls/oleaut32/variant.c:
> if (leftvt == VT_NULL || rightvt == VT_NULL)
>      {
> -        /*
> -         * Special cases for when left variant is VT_NULL
> -         * (VT_NULL & 0 = VT_NULL, VT_NULL & value = value)
> -         */
> +        /* Three-valued logic for `And` with Null:
> +         *   zero    And Null = zero  (typed by the resvt computed above)
> +         *   nonzero And Null = Null
> +         *   Null    And Null = Null
> +         *
> +         * Both orderings must produce the same result. */
> +        VARIANT *other;
> +        VARTYPE othervt;

You may just use `V_VT(other)`.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/10673#note_138751