Re: [PATCH v3 0/7] MR6752: include: More fixes to build libc++.

[Jacek Caban (＠jacek)]

Jacek Caban (@jacek) commented about include/winnt.h:
> #endif
>  }
> -
>
> +#ifdef __x86_64__

As far as I can see, `UnsignedMultiply128` should be available on ARM64 too, my comment was only about `_umul128`.