From 219cfc8d178eb9cba8e8482006c731c45cc2ac33 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim=20D=C3=BCsterhus?= <duesterhus@woltlab.com>
Date: Fri, 29 Oct 2021 16:06:44 +0200
Subject: [PATCH] Fix ACP login for PHP 8.1

see 9d12c9783ce32b0396a80a498f54b053591d4aa3
---
 wcfsetup/install/files/acp/templates/header.tpl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/acp/templates/header.tpl b/wcfsetup/install/files/acp/templates/header.tpl
index e42883decb..840b6a59aa 100644
--- a/wcfsetup/install/files/acp/templates/header.tpl
+++ b/wcfsetup/install/files/acp/templates/header.tpl
@@ -150,7 +150,7 @@
 			
 			User.init(
 				{@$__wcf->user->userID},
-				'{@$__wcf->user->username|encodeJS}',
+				{if $__wcf->user->userID}'{@$__wcf->user->username|encodeJS}'{else}''{/if},
 				{if $__wcf->user->userID}'{@$__wcf->user->getLink()|encodeJS}'{else}''{/if}
 			);
 			
@@ -180,7 +180,10 @@
 	<script>
 		define.amd = __require_define_amd;
 		$.holdReady(true);
-		WCF.User.init({$__wcf->user->userID}, '{@$__wcf->user->username|encodeJS}');
+		WCF.User.init(
+			{@$__wcf->user->userID},
+			{if $__wcf->user->userID}'{@$__wcf->user->username|encodeJS}'{else}''{/if}
+		);
 	</script>
 	{js application='wcf' file='WCF.Attachment' bundle='WCF.Combined'}
 	{js application='wcf' file='WCF.Message' bundle='WCF.Combined'}
-- 
2.20.1