New review comment by fosslinux on void-packages repository

https://github.com/void-linux/void-packages/pull/23582#discussion_r454808982

Comment:
Don't do this either. The cd command is unnessecary if you remove the build_style and let it extract itself correctly. In addition, the Makefile has no default target so this does nothing.

The Makefile also does not respect `$DESTDIR` which `xbps-src` requires. IMO, reimplement the Makefile in xbps-src, with something like:

```
vbin lainsafecli
vman doc/lainsafecli.1
```