Fix dl_cleanup.py

SVN-Revision: 22578

scripts/dl_cleanup.py

@@ -147,7 +147,8 @@ def main(argv):
 			"hdBw:",
 			[ "help", "dry-run", "show-blacklist", "whitelist=", ])
 		if len(args) != 1:
-			raise getopt.GetoptError()
+			usage()
+			return 1
 	except getopt.GetoptError:
 		usage()
 		return 1