Reduce max backlog in listen(): 20 --> 10

Both the original MIT Athena inetd and the GNU inetutils inetd only keep
a backlog of 10 connections in listen() for TCP sockets.  This patch
adjusts the Finit hard coded default accordingly.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

inetd.c

@@ -228,7 +228,7 @@ static int spawn_socket(inetd_t *inetd)
 
 	if (inetd->port) {
 		if (inetd->type == SOCK_STREAM) {
-			if (-1 == listen(sd, 20)) {
+			if (-1 == listen(sd, 10)) {
 				FLOG_PERROR("Failed listening to inetd service %s", inetd->name);
 				close(sd);
 				return -errno;