helpers.c:set_hostname() - Fix resource and memory leaks.

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

finit.c

@@ -250,7 +250,7 @@ int main(int argc, char* argv[])
 	run("/sbin/sysctl -e -p /etc/sysctl.conf >/dev/null");
 
 	/* Set initial hostname. */
-	set_hostname(hostname);
+	set_hostname(&hostname);
 
 	ifconfig("lo", "127.0.0.1", "255.0.0.0", 1);
 	if (network)