New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/36458#discussion_r841055242

Comment:
```suggestion
make_dirs="
 /etc/wireproxy 0750 root _wireproxy
 /var/lib/wireproxy 0700 _wireproxy _wireproxy"
```
and $make_dirs can be in the main block after $checksum