There is an updated pull request by pbui against master on the void-packages repository

https://github.com/pbui/void-packages libdvdread
https://github.com/void-linux/void-packages/pull/16056

[WIP] libdvdread: update to 6.0.2.
Update requires a revbump of packages that link with libdvdread.

A patch file from https://github.com/void-linux/void-packages/pull/16056.patch is attached