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

https://github.com/Piraty/void-packages libevent-2.1.11
https://github.com/void-linux/void-packages/pull/13873

libevent: update to 2.1.11.
build: all packages build, except
* icecat (#15221 )

run: firefox, thunderbird, tmux and qt work fine (tested on x86_64)

A patch file from https://github.com/void-linux/void-packages/pull/13873.patch is attached