captive portal: Reload firewall rules after cleanup

This is not necessary to stop any clients from accessing the
Internet, but if we know that we don't need a line for certain
any more, we can as well remove the firewall rule straight away.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/scripts/captive-cleanup

@@ -46,4 +46,7 @@ if (-f $settingsfile && -f $clients && ! -z $clients){
 		}
 	}
 	&General::writehasharray("$clients", \%clientshash);
+
+	# Reload firewall rules
+	system("/usr/local/bin/captivectrl");
 }