From 11526604e18890c7d455d718202e0b955a298197 Mon Sep 17 00:00:00 2001
From: onli <onli@paskuda.biz>
Date: Tue, 16 Mar 2021 19:49:02 +0100
Subject: [PATCH] php8 compat: undefined display_dat array keys

---
 include/functions_rss.inc.php | 2 +-
 rss.php                       | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/functions_rss.inc.php b/include/functions_rss.inc.php
index baa12218..f311b047 100644
--- a/include/functions_rss.inc.php
+++ b/include/functions_rss.inc.php
@@ -160,7 +160,7 @@ function serendipity_printEntries_rss(&$entries, $version, $comments = false, $f
             }
 
             serendipity_plugin_api::hook_event($entry_hook, $entry);
-            $entry['per_entry_display_dat'] = $entry['display_dat'];
+            $entry['per_entry_display_dat'] = $entry['display_dat'] ?? null;
         }
     }
 
diff --git a/rss.php b/rss.php
index 3b843eaa..4c301701 100644
--- a/rss.php
+++ b/rss.php
@@ -298,8 +298,8 @@ switch($version) {
 }
 
 serendipity_plugin_api::hook_event($namespace_hook, $entries);
-$namespace_display_dat = $entries['display_dat'];
-$channel_display_dat = $entries['channel_dat'];
+$namespace_display_dat = $entries['display_dat'] ?? null;
+$channel_display_dat = $entries['channel_dat'] ?? null;
 unset($entries['display_dat']);
 unset($entries['channel_dat']);
 $serendipity['smarty']->assignByRef('metadata', $metadata);