From a9da7a56ead4df3eec1811ab7179771ddcd9e243 Mon Sep 17 00:00:00 2001
From: Fabrice Creuzot <code@luigifab.fr>
Date: Wed, 8 Jun 2022 19:36:05 +0200
Subject: [PATCH] Hide empty sub menu

---
 app/code/core/Mage/Adminhtml/Block/Page/Menu.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
index 057004a45b9..e3be2014fb9 100644
--- a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
+++ b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
@@ -289,6 +289,9 @@ public function getMenuLevel($menu, $level = 0)
     {
         $html = '<ul ' . (!$level ? 'id="nav"' : '') . '>' . PHP_EOL;
         foreach ($menu as $item) {
+            if ((empty($item['url']) || ($item['url'] == '#')) && empty($item['children'])) {
+                continue; // for example hide System/Tools when empty
+            }
             $html .= '<li ' . (!empty($item['children']) ? 'onmouseover="Element.addClassName(this,\'over\')" '
                 . 'onmouseout="Element.removeClassName(this,\'over\')"' : '') . ' class="'
                 . (!$level && !empty($item['active']) ? ' active' : '') . ' '