(#7221)  Return NULL from get_daemon_name() if get_fqdn_from_hostname() fails.
(#7221)  Return NULL from get_daemon_name() if get_fqdn_from_hostname() fails.

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor