Random Xorg freezes fixed with latest commit to drm

[Daniel Bilik]

Hi, Matt.

(I'm still holding my breath but) it seems that commit 85bc18ad+
(drm/linux: Rework wait_event_xxx() macros) has finally fixed
long-standing bug (reported here [1]) that was causing random Xorg freezes
with compton [2] running. I've updated to master this morning, uptime of
the system is now more than 8 hours, and still no Xorg freeze. :)

Thank you very much, Matt and François.

--
						Daniel

[1] http://lists.dragonflybsd.org/pipermail/users/2019-June/358203.html
[2] https://github.com/chjj/compton