wm: ircd

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add ERR_NONICKNAMEGIVEN (421)

--- a/ircd.c

+++ b/ircd.c

@@ -34,6 +34,7 @@

 	ERR_NOSUCHCHANNEL = 403,

 	ERR_CANNOTSENDTOCHAN = 404,

 	ERR_UNKNOWNCOMMAND = 421,

+	ERR_NONICKNAMEGIVEN = 431,

 	ERR_ERRONEUSNICKNAME = 432,

 	ERR_NICKNAMEINUSE = 433,

 	ERR_NOTONCHANNEL = 442,

@@ -396,6 +397,9 @@

 		/* r->argv is: command */

 		n = snprint(buf, n, ":%s 421 %s %s :Unknown command\r\n", servername, c->nick, r->argv[0]);

 		break;

+	case ERR_NONICKNAMEGIVEN:

+		n = snprint(buf, n, ":%s 421 %s :No nickname given\r\n", servername, c->nick);

+		break;

 	case ERR_ERRONEUSNICKNAME:

 		/* r->argv[0] is nick */

 		n = snprint(buf, n, ":%s 432 %s %s :Erroneus nickname\r\n", servername, c->nick, r->argv[0]);

@@ -986,8 +990,11 @@

 	}

 	if(strcmp(cmd, "NICK") == 0){

 		tmp = strtok(0, " \r"); /* nick */

-		if(tmp == nil)

-			return 0;

+		if(tmp == nil){

+			r.code = ERR_NONICKNAMEGIVEN;

+			reply(c, &r);

+			return 1;

+		}

 		return nick(c, tmp);

 	}

 	if(strcmp(cmd, "USER") == 0){