There is a new pull request by rwt3k against master on the void-packages repository

https://github.com/rwt3k/void-packages unrar-5.9.1
https://github.com/void-linux/void-packages/pull/18628

unrar: update to 5.9.1


A patch file from https://github.com/void-linux/void-packages/pull/18628.patch is attached