rots-utils: fix options

source/info.c

@@ -35,15 +35,18 @@ static int parse_args(struct args *args, int argc, char *argv[])
 	};
 	int ret;
 
-	while ((ret = getopt_long(argc, (char * const *)argv, "hi:d:k:", options,
+	while ((ret = getopt_long(argc, (char * const *)argv, "hi:", options,
 		NULL)) >= 0) {
 		switch (ret) {
 		case OPTION_HELP: return -1;
 		case OPTION_IMAGE: args->image = optarg; break;
-		default: break;
+		default: return -1;
 		}
 	}
 
+	if (!args->image)
+		return -1;
+
 	return 0;
 }