From 2ad26836bd9b06cde767932f1ef0b01552bb18ef Mon Sep 17 00:00:00 2001
From: Bernie Reiter <ockham@raz.or.at>
Date: Tue, 31 Oct 2023 17:35:19 +0100
Subject: [PATCH] Pass as reference at callsite

---
 src/wp-includes/blocks.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/wp-includes/blocks.php b/src/wp-includes/blocks.php
index 8bfcb0dfca359..7a55a6ba31ae6 100644
--- a/src/wp-includes/blocks.php
+++ b/src/wp-includes/blocks.php
@@ -1126,7 +1126,7 @@ function traverse_and_serialize_blocks( $blocks, $pre_callback = null, $post_cal
 
 			$result .= call_user_func_array(
 				$pre_callback,
-				array( &$block, $parent, $prev )
+				array( &$block, &$parent, $prev )
 			);
 		}
 
@@ -1137,7 +1137,7 @@ function traverse_and_serialize_blocks( $blocks, $pre_callback = null, $post_cal
 
 			$post_markup = call_user_func_array(
 				$post_callback,
-				array( &$block, $parent, $next )
+				array( &$block, &$parent, $next )
 			);
 		}