dbus-name: don't print [none] for removed services only
dbus-name: don't print [none] for removed services only

If the owner was added or changed, but we didn't get the PID in time,
print "[none]" as indicator anyway.

grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks