TinyMCE, floating toolbars: return early if no selected element in the editor. See #30619.

Built from https://develop.svn.wordpress.org/trunk@31727


git-svn-id: http://core.svn.wordpress.org/trunk@31708 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/plugins/wordpress/plugin.js

@@ -585,6 +585,10 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 					margin = 8,
 					adminbarHeight = 0;
 
+				if ( ! currentSelection ) {
+					return;
+				}
+
 				windowPos = window.pageYOffset || document.documentElement.scrollTop;
 				adminbar = tinymce.$( '#wpadminbar' )[0];
 				mceToolbar = tinymce.$( '.mce-toolbar-grp', editor.getContainer() )[0];

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31726';
+$wp_version = '4.2-alpha-31727';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.