New review comment by Piraty on void-packages repository

https://github.com/void-linux/void-packages/pull/27195#discussion_r545115723

Comment:
this 
1. doesn't build anything and renders the [package empty (except license)](https://github.com/void-linux/void-packages/pull/27195/checks?check_run_id=1563142458#step:13:9)
2. should not be necessary as CFLAGS is already in env