Before the change:
```console
$ sh -c ". /etc/rc.subr && name=rctest && command=/bin/echo && command_args=ok && rctest_login_class="" && run_rc_command start"
Starting rctest.
limits: setrlimit datasize: Operation not permitted
sh: WARNING: failed to start rctest
```
After the change:
```console
$ sh -c ". ./rc.subr && name=rctest && command=/bin/echo && command_args=ok && rctest_login_class="" && run_rc_command start"
Starting rctest.
ok
```