New comment by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/pull/49649#issuecomment-2033571600

Comment:
Musl and Glibc differ at how they define NULL. (`std::nullptr` vs `(void*)0`).
Both of these choices are valid, but std::nullptr can't be implicitely used as a number.

Upstream amdvlk uses NULL as an integer and not a Pointer in a few places