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

https://github.com/ndowens/void-packages protobuf
https://github.com/void-linux/void-packages/pull/15919

protobuf: update to 3.10.0
@the-maldridge 

A patch file from https://github.com/void-linux/void-packages/pull/15919.patch is attached