Fix broken audio/video functions when sanitizing ID3 data

This fixes a bug where running `wp_kses_post_deep()` on all the ID3
tag data corrupted blob data.

Fixes #40075, #40085.

Built from https://develop.svn.wordpress.org/trunk@40400


git-svn-id: http://core.svn.wordpress.org/trunk@40307 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/media.php

@@ -2982,7 +2982,7 @@ function wp_add_id3_tag_data( &$metadata, $data ) {
 		if ( ! empty( $data[$version]['comments'] ) ) {
 			foreach ( $data[$version]['comments'] as $key => $list ) {
 				if ( 'length' !== $key && ! empty( $list ) ) {
-					$metadata[$key] = reset( $list );
+					$metadata[$key] = wp_kses_post( reset( $list ) );
 					// Fix bug in byte stream analysis.
 					if ( 'terms_of_use' === $key && 0 === strpos( $metadata[$key], 'yright notice.' ) )
 						$metadata[$key] = 'Cop' . $metadata[$key];
@@ -3072,8 +3072,6 @@ function wp_read_video_metadata( $file ) {
 
 	wp_add_id3_tag_data( $metadata, $data );
 
-	$metadata = wp_kses_post_deep( $metadata );
-
 	return $metadata;
 }
 
@@ -3119,8 +3117,6 @@ function wp_read_audio_metadata( $file ) {
 
 	wp_add_id3_tag_data( $metadata, $data );
 
-	$metadata = wp_kses_post_deep( $metadata );
-
 	return $metadata;
 }
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40399';
+$wp_version = '4.8-alpha-40400';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.