From 9ac4ff37f013a347a6754e6e147eaad2d2fa55b6 Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Tue, 29 Dec 2009 21:11:59 +0000
Subject: [PATCH] Return empty array instead of null. Props Denis-de-Bernardy.
 fixes #11661 for 2.9

git-svn-id: https://develop.svn.wordpress.org/branches/2.9@12572 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/post.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/wp-includes/post.php b/wp-includes/post.php
index f0427c16d..2e9807138 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2391,8 +2391,10 @@ function &get_page_children($page_id, $pages) {
  */
 function &get_page_hierarchy( &$pages, $page_id = 0 ) {
 
-	if ( empty( $pages ) )
-		return null;
+	if ( empty( $pages ) ) {
+		$return = array();
+		return $return;
+	}
 
 	$children = array();
 	foreach ( (array) $pages as $p ) {