Bugfix: the "-mx" option would incorrectly be passed as the IP address.

exec/dyndns.js

@@ -19,10 +19,13 @@ function writeln(str)
 }
 
 var mx_record;
+var ip_address;
 
-for(i=0;i<argc;i++)
+for(i=1;i<argc;i++)
 	if(argv[i].toLowerCase()=="-mx")
-		mx_record = argv[i+1];
+		mx_record = argv[++i];
+	else
+		ip_address = argv[i];
 
 for(h in host_list) {
 	sock = new Socket();
@@ -48,8 +51,8 @@ for(h in host_list) {
 				writeln(argv[0]);
 				break;
 			case "ip?":
-				if(argv[1])
-					writeln(argv[1]);
+				if(ip_address)
+					writeln(ip_address);
 				else
 					writeln("");
 				break;