New review comment by mtboehlke on void-packages repository

https://github.com/void-linux/void-packages/pull/39275#discussion_r971492809

Comment:
 I see what you mean. Is it safe to assume gcc will define C++ bool and bool from stdbool.h in a compatible way, given that we expect C++ to be able to call C code?  In that case, we could simply remove the whole block and `#include <stdbool.h>`