daemon.c: fix condition for redirecting stderr

Since the --log-destination option was added in 0c591cacb ("daemon: add
--log-destination=(stderr|syslog|none)", 2018-02-04) with the explicit
goal of allowing logging to stderr when running in inetd mode, we should
not always redirect stderr to /dev/null in inetd mode, but rather only
when stderr is not being used for logging.

Signed-off-by: Lucas Werkmeister <mail@lucaswerkmeister.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

daemon.c

@@ -1462,7 +1462,7 @@ int cmd_main(int argc, const char **argv)
 		die("base-path '%s' does not exist or is not a directory",
 		    base_path);
 
-	if (inetd_mode) {
+	if (log_destination != LOG_DESTINATION_STDERR) {
 		if (!freopen("/dev/null", "w", stderr))
 			die_errno("failed to redirect stderr to /dev/null");
 	}