This script is used to delay something in a loop that is active while
xscreensaver is running.
Since it calls `sleep` from coreutils, the effect of `sleep` not being
on $PATH is that it turns into a busy loop that does nothing, causing
a variety of problems with things like resuming from suspend if a
screenlocker is active.
Situations where coreutils might not be on $PATH are, for example,
cases where xscreensaver is launched via a systemd-unit (e.g. through
xss-lock).
I've been running xsecurelock with this change for a while (since
https://cl.tvl.fyi/c/depot/+/4403) and it has resolved these issues
for me.
