External Library: Update getid3 to 1.9.18

Follow up to r46112 as getid3 has tagged an official release.

Changes: 00f3fbfd77...v1.9.18

Props desrosj, jkitchen.
Fixes #47751 #40883 #43836.

Built from https://develop.svn.wordpress.org/trunk@46166


git-svn-id: http://core.svn.wordpress.org/trunk@45978 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ID3/getid3.php

@@ -250,7 +250,7 @@ class getID3
 	 */
 	protected $startup_warning = '';
 
-	const VERSION           = '1.9.17-201907240906';
+	const VERSION           = '1.9.18-201907240906';
 	const FREAD_BUFFER_SIZE = 32768;
 
 	const ATTACHMENTS_NONE   = false;

wp-includes/ID3/module.audio-video.matroska.php

@@ -342,7 +342,7 @@ class getid3_matroska extends getid3_handler
 						switch ($trackarray['CodecID']) {
 							case 'A_PCM/INT/LIT':
 							case 'A_PCM/INT/BIG':
-								$track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
+								$track_info['bitrate'] = $track_info['sample_rate'] * $track_info['channels'] * $trackarray['BitDepth'];
 								break;
 
 							case 'A_AC3':

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-46165';
+$wp_version = '5.3-alpha-46166';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.