There is a new pull request by 25thom against master on the void-packages repository

https://github.com/25thom/void-packages patch-1
https://github.com/void-linux/void-packages/pull/20663

gzdoom: added libopenal to depends
libopenal is needed to have sound output from GZDoom. Without libopenal GZDoom will not play sound, and provide the user with a "failed to init sound" message.

A patch file from https://github.com/void-linux/void-packages/pull/20663.patch is attached