New review comment by classabbyamp on void-packages repository

https://github.com/void-linux/void-packages/pull/38620#discussion_r944005544

Comment:
`GPL-2.0-only`

```
 * pdf2djvu is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
```