silly typo

locust/argument_parser.py

@@ -173,7 +173,7 @@ def download_locustfile_from_url(url: str) -> str:
             sys.stderr.write(
                 f"Failed to get locustfile from: {url}. Response was not valid python code: '{response.text[:100]}'"
             )
-        sys.exit(1)
+            sys.exit(1)
 
     with open(os.path.join(tempfile.gettempdir(), urlparse(url).path.split("/")[-1]), "w") as locustfile:
         locustfile.write(response.text)