Twenty Thirteen, Twenty Fourteen and Twenty Fifteen: Fixes insufficient check for existence of DOM elements in jQuery object

Fixes #34033
Props: tywayne 

Built from https://develop.svn.wordpress.org/trunk@36999


git-svn-id: http://core.svn.wordpress.org/trunk@36966 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyfifteen/js/functions.js

@@ -49,7 +49,7 @@
 	// Enable menu toggle for small screens.
 	( function() {
 		var menu, widgets, social;
-		if ( ! secondary || ! button ) {
+		if ( ! secondary.length || ! button.length ) {
 			return;
 		}
 
@@ -57,7 +57,7 @@
 		menu    = secondary.find( '.nav-menu' );
 		widgets = secondary.find( '#widget-area' );
 		social  = secondary.find( '#social-navigation' );
-		if ( ! widgets.length && ! social.length && ( ! menu || ! menu.children().length ) ) {
+		if ( ! widgets.length && ! social.length && ( ! menu.length || ! menu.children().length ) ) {
 			button.hide();
 			return;
 		}

wp-content/themes/twentyfourteen/js/functions.js

@@ -16,12 +16,12 @@
 
 	// Enable menu toggle for small screens.
 	( function() {
-		if ( ! nav || ! button ) {
+		if ( ! nav.length || ! button.length ) {
 			return;
 		}
 
 		// Hide button if menu is missing or empty.
-		if ( ! menu || ! menu.children().length ) {
+		if ( ! menu.length || ! menu.children().length ) {
 			button.hide();
 			return;
 		}

wp-content/themes/twentythirteen/js/functions.js

@@ -34,12 +34,12 @@
 	 * Enables menu toggle for small screens.
 	 */
 	( function() {
-		if ( ! nav || ! button ) {
+		if ( ! nav.length || ! button.length ) {
 			return;
 		}
 
 		// Hide button if menu is missing or empty.
-		if ( ! menu || ! menu.children().length ) {
+		if ( ! menu.length || ! menu.children().length ) {
 			button.hide();
 			return;
 		}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta3-36998';
+$wp_version = '4.5-beta3-36999';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.