Bug#1088302: segfault during login if screensaver was on

[Jeff Bradberry]

I believe that this has a fix upstream, in version 47.4
(https://gitlab.gnome.org/GNOME/gnome-shell/-/releases/47.4).  The
relevant merge request linked in the release notes is
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3619.