From 1bac2cbe661145a5f65f1fd37db54c1d90853fcc Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Mon, 20 Apr 2020 11:34:07 +0000
Subject: [PATCH] External Libraries: Backport a commit from getID3() trunk to
 fix a PHP 7.4+ notice.

This addresses a "Trying to access array offset on value of type bool" notice in the `getid3_mp3::MPEGaudioHeaderValid()` method.

Props schlessera.
Fixes #49945.
Built from https://develop.svn.wordpress.org/trunk@47602


git-svn-id: http://core.svn.wordpress.org/trunk@47377 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/ID3/getid3.php           | 2 +-
 wp-includes/ID3/module.audio.mp3.php | 2 +-
 wp-includes/version.php              | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/wp-includes/ID3/getid3.php b/wp-includes/ID3/getid3.php
index a6260f0689..cc238253d5 100644
--- a/wp-includes/ID3/getid3.php
+++ b/wp-includes/ID3/getid3.php
@@ -250,7 +250,7 @@ class getID3
 	 */
 	protected $startup_warning = '';
 
-	const VERSION           = '1.9.19-201912131005';
+	const VERSION           = '1.9.19-201912211559';
 	const FREAD_BUFFER_SIZE = 32768;
 
 	const ATTACHMENTS_NONE   = false;
diff --git a/wp-includes/ID3/module.audio.mp3.php b/wp-includes/ID3/module.audio.mp3.php
index 192317467c..0b8a351169 100644
--- a/wp-includes/ID3/module.audio.mp3.php
+++ b/wp-includes/ID3/module.audio.mp3.php
@@ -1788,7 +1788,7 @@ class getid3_mp3 extends getid3_handler
 	 * @return bool
 	 */
 	public static function MPEGaudioHeaderValid($rawarray, $echoerrors=false, $allowBitrate15=false) {
-		if (($rawarray['synch'] & 0x0FFE) != 0x0FFE) {
+		if (!isset($rawarray['synch']) || ($rawarray['synch'] & 0x0FFE) != 0x0FFE) {
 			return false;
 		}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 82089c476e..bbafacee46 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47601';
+$wp_version = '5.5-alpha-47602';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.