From c2048baf16fad78ad4cd7ecb6111e5c31a533d52 Mon Sep 17 00:00:00 2001
From: Eddie Kohler <ekohler@gmail.com>
Date: Wed, 26 Jul 2023 11:32:50 -0400
Subject: [PATCH] Whoops

---
 src/documentinfo.php | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/documentinfo.php b/src/documentinfo.php
index 0ee96995c3..6f7df5b95a 100644
--- a/src/documentinfo.php
+++ b/src/documentinfo.php
@@ -1525,11 +1525,14 @@ function metadata() {
     /** @param string $key
      * @param mixed $value */
     function __set_metadata($key, $value) {
-        $m = $this->metadata() ?? (object) [];
+        $this->metadata();
+        if ($this->_metadata === null) {
+            $this->_metadata = (object) [];
+        }
         if ($value !== null) {
-            $m->$key = $value;
+            $this->_metadata->$key = $value;
         } else {
-            unset($m->$key);
+            unset($this->_metadata->$key);
         }
     }