New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/issues/22339#issuecomment-634384372

Comment:
Travis CI fetches the head of the `master` branch of `xtools`. The `xlint` behavior change was committed on May 6. Since no release has been made since that change, the version of `xlint` in the `void-packages` repo is behind.