Media: in `media_send_to_editor()`, use `wp_json_encode()` instead of `addslashes()`.

Props TobiasBg.
Fixes #22135.

Built from https://develop.svn.wordpress.org/trunk@35677


git-svn-id: http://core.svn.wordpress.org/trunk@35641 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/media.php

@@ -248,7 +248,7 @@ function media_send_to_editor($html) {
 ?>
 <script type="text/javascript">
 var win = window.dialogArguments || opener || parent || top;
-win.send_to_editor('<?php echo addslashes($html); ?>');
+win.send_to_editor( <?php echo wp_json_encode( $html ); ?> );
 </script>
 <?php
 	exit;

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-beta4-35676';
+$wp_version = '4.4-beta4-35677';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.