From c5e6320fa6182f51129bc492861ada500a72e04c Mon Sep 17 00:00:00 2001
From: Lukas Juhrich <lukas.juhrich@agdsn.de>
Date: Tue, 20 Sep 2022 13:17:21 +0200
Subject: [PATCH] Add missing definition of variable

Relates to python/mypy#13696
---
 src/hades/agent/tasks.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/hades/agent/tasks.py b/src/hades/agent/tasks.py
index 870572f4..e82722fb 100644
--- a/src/hades/agent/tasks.py
+++ b/src/hades/agent/tasks.py
@@ -319,8 +319,7 @@ def get_auth_attempts_at_port(
     """
     nas_ip_address = check_ip_address("nas_ip_address", nas_ip_address)
     nas_port_id = check_str("nas_port_id", nas_port_id)
-    if when is not None:
-        safe_when = check_timestamp_range("until", when)
+    safe_when = check_timestamp_range("until", when) if when is not None else None
     if limit is not None:
         limit = check_positive_int("limit", limit)
     with contextlib.closing(engine.connect()) as connection: