New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/23520#discussion_r453206394

Comment:
Okay, I think I managed to fix it with a sed replacement instead. It's similar to the one used in `git-absord`. However, I seem to need to add `libgit2-devel` to `makedepends` as well, because otherwise the build system passes flags like `-m64` to gcc for the linking step. Should I report this as an error somewhere? It certainly seems like one.

Regarding char signedness, how do I indicate it? `arch="x86_64* i686*"` ? I couldn't find a `XBPS_*` flag for it.