New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/35536#discussion_r805187028

Comment:
> Right, I always forget about that one.. Maybe we should have a lint for this?

https://github.com/leahneukirchen/xtools/pull/220

I think we could write something like:

```
# FIXME: TypeError: None is not callable
```