From d28ceb205895cbf2ed5012dfae377eeb92bf4dfd Mon Sep 17 00:00:00 2001
From: Shane Harvey <shnhrv@gmail.com>
Date: Fri, 2 Aug 2024 16:31:59 -0700
Subject: [PATCH] PYTHON-4021 Fix previous topologyDescription published when
 closing a client (#1769)

---
 pymongo/asynchronous/topology.py | 2 +-
 pymongo/synchronous/topology.py  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pymongo/asynchronous/topology.py b/pymongo/asynchronous/topology.py
index 183c459f2..4e55db498 100644
--- a/pymongo/asynchronous/topology.py
+++ b/pymongo/asynchronous/topology.py
@@ -645,6 +645,7 @@ class Topology:
         :exc:`~.errors.InvalidOperation`.
         """
         async with self._lock:
+            old_td = self._description
             for server in self._servers.values():
                 await server.close()
 
@@ -664,7 +665,6 @@ class Topology:
         # Publish only after releasing the lock.
         if self._publish_tp:
             assert self._events is not None
-            old_td = self._description
             self._description = TopologyDescription(
                 TOPOLOGY_TYPE.Unknown,
                 {},
diff --git a/pymongo/synchronous/topology.py b/pymongo/synchronous/topology.py
index eda5f01d3..8542f67bb 100644
--- a/pymongo/synchronous/topology.py
+++ b/pymongo/synchronous/topology.py
@@ -643,6 +643,7 @@ class Topology:
         :exc:`~.errors.InvalidOperation`.
         """
         with self._lock:
+            old_td = self._description
             for server in self._servers.values():
                 server.close()
 
@@ -662,7 +663,6 @@ class Topology:
         # Publish only after releasing the lock.
         if self._publish_tp:
             assert self._events is not None
-            old_td = self._description
             self._description = TopologyDescription(
                 TOPOLOGY_TYPE.Unknown,
                 {},