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

https://github.com/25thom/void-packages patch-2
https://github.com/void-linux/void-packages/pull/20665

gzdoom: fix depends for audio
GZDoom needs libopenal, or FMOD [https://zdoom.org/wiki/Compile_GZDoom_on_Linux#Install_dependencies] to have sound playback. FMOD is not in the Void repo, so adding OpenAL as a dependency is a cheap workaround.

A patch file from https://github.com/void-linux/void-packages/pull/20665.patch is attached