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

https://github.com/Duncaen/void-packages valgrind-3.19.0
https://github.com/void-linux/void-packages/pull/37733

valgrind: update to 3.19.0.
None

A patch file from https://github.com/void-linux/void-packages/pull/37733.patch is attached