From fc716d0e6e7ceaf8e67c7e866ad6819cf8aca628 Mon Sep 17 00:00:00 2001
From: ralf <rb@egroupware.org>
Date: Mon, 17 Oct 2022 15:58:59 +0200
Subject: [PATCH] Fix PHP 8.x Fatal: array_merge(): Argument #2 must be of type
 array, null given

---
 api/src/Mail.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/api/src/Mail.php b/api/src/Mail.php
index cafdc455b8..cc897f521b 100644
--- a/api/src/Mail.php
+++ b/api/src/Mail.php
@@ -3189,7 +3189,7 @@ class Mail
 			//error_log(__METHOD__.__LINE__.array2string($autoFolderObjects));
 			// avoid calling sortByAutoFolder as it is not regarding subfolders
 			$autoFolderObjectsTmp = $autoFolderObjects;
-			unset($autoFolderObjects);
+			$autoFolderObjects = [];
 			uasort($autoFolderObjectsTmp, array($this,'sortByMailbox'));
 			foreach($autoFoldersTmp as $afk=>$aF)
 			{