lur: fix the index parsing for disconnect

argv[3] is the /dev/hidraw path

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

tools/lur-command.c

@@ -243,7 +243,7 @@ main(int argc, char **argv)
 			return EXIT_FAILURE;
 		}
 
-		index = atoi(argv[3]);
+		index = atoi(argv[2]);
 		disconnect_device(receiver, index);
 	} else {
 		usage();