diff --git a/wp-includes/js/tinymce/plugins/wordpress/plugin.js b/wp-includes/js/tinymce/plugins/wordpress/plugin.js
index 45c3c13387..62872d2d2a 100644
--- a/wp-includes/js/tinymce/plugins/wordpress/plugin.js
+++ b/wp-includes/js/tinymce/plugins/wordpress/plugin.js
@@ -19,7 +19,7 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 	}
 
 	function toggleToolbars( state ) {
-		var iframe, initial, toolbars,
+		var initial, toolbars,
 			pixels = 0,
 			classicBlockToolbar = tinymce.$( '.block-library-classic__toolbar' );
 
@@ -437,7 +437,7 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 		editor.addButton( 'wp_add_media', {
 			tooltip: 'Add Media',
 			icon: 'dashicon dashicons-admin-media',
-			cmd: 'WP_Medialib',
+			cmd: 'WP_Medialib'
 		} );
 
 		editor.addMenuItem( 'add_media', {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7e4c2fde22..1bfb6df4fd 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-beta3-43889';
+$wp_version = '5.0-beta3-43890';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.