New comment by Anachron on void-packages repository

https://github.com/void-linux/void-packages/pull/15327#issuecomment-540998160

Comment:
Yep I've realized,- thanks. Hope all is well now.

@Hoshpak wait, how can I override `CFLAGS` and `CXXFLAGS` when it's [overwritten by the `build_system`](https://github.com/void-linux/void-packages/commit/6b81302e380aaf6688982b932a4efff7c642a7f5#diff-01d3507d632da4c62a40525dd3c0005dR20-R21)?