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

https://github.com/ekomizer/void-packages xinit-patch-1
https://github.com/void-linux/void-packages/pull/12242

xinit: add patch
Move startx auth files in /tmp so they are removed on reboot.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=357736
The trap patch didn't seem to work on reboot.

Source: https://git.archlinux.org/svntogit/packages.git/tree/trunk/06_move_serverauthfile_into_tmp.diff?h=packages/xorg-xinit

A patch file from https://github.com/void-linux/void-packages/pull/12242.patch is attached