From 6522f8a6d98f81a10f68cd01294201997d51c3a0 Mon Sep 17 00:00:00 2001
From: Carl Schwan <carl@carlschwan.eu>
Date: Fri, 10 Dec 2021 16:39:50 +0100
Subject: [PATCH] Fix merging list with null

This fixes some cases observed with the debugger where we end up merging
a non empty list with null. The result is then null and the looping over
the items would then end.

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
---
 apps/user_ldap/lib/Group_LDAP.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/apps/user_ldap/lib/Group_LDAP.php b/apps/user_ldap/lib/Group_LDAP.php
index 6b50c30ff0a..c2259c42aba 100644
--- a/apps/user_ldap/lib/Group_LDAP.php
+++ b/apps/user_ldap/lib/Group_LDAP.php
@@ -24,6 +24,7 @@
  * @author Victor Dubiniuk <dubiniuk@owncloud.com>
  * @author Vinicius Cubas Brand <vinicius@eita.org.br>
  * @author Xuanwo <xuanwo@yunify.com>
+ * @author Carl Schwan <carl@carlschwan.eu>
  *
  * @license AGPL-3.0
  *
@@ -375,7 +376,7 @@ class Group_LDAP extends BackendUtility implements GroupInterface, IGroupLDAP, I
 			$fetched = $this->access->connection->getFromCache($cacheKey);
 			if ($fetched === null) {
 				$fetched = $fetcher($recordDN);
-				$fetched = $this->access->connection->writeToCache($cacheKey, $fetched);
+				$this->access->connection->writeToCache($cacheKey, $fetched);
 			}
 			$list = array_merge($list, $fetched);
 			if (!isset($seen[$recordDN]) || is_bool($seen[$recordDN]) && is_array($record)) {