Added username to dupliate IP warning.

src/sbbs3/newuser.cpp

@@ -126,7 +126,8 @@ void sbbs_t::newuser()
 	useron.prot=cfg.new_prot;
 	strcpy(useron.note,cid);		/* Caller ID if supported, NULL otherwise */
 	if((i=userdatdupe(0,U_NOTE,LEN_NOTE,cid,true))!=0) {	/* Duplicate IP address */
-		sprintf(useron.comment,"Warning: same IP address as user #%d",i);
+		sprintf(useron.comment,"Warning: same IP address as user #%d %s"
+			,i,username(&cfg,i,str));
 		logline("N!",useron.comment); 
 	}