irc config only readable by root

src/freedombone-app-irc

@@ -570,6 +570,7 @@ function install_irc_server {
 
     IRC_ONION_HOSTNAME=$(add_onion_service irc ${IRC_BOUNCER_PORT} ${IRC_ONION_PORT})
 
+    chmod 600 /etc/ngircd/ngircd.conf
     systemctl restart ngircd
 
     add_watchdog_daemon ngircd