__pids_pidof calls pidof always with -c, which will result in it always failing
to get a pid when run as a non-root user.  This propagates further to some
services not identified as running but having their subsys locked when a normal
user invokes the status action for a service that doesn't have a pid file.

A fix would be to run pidof with -c only when run as root, and without it when
non-root.  Even though __pids_pidof in that case could still produce different
results for root/non-root, I think it would be an improvement over the current
situation.