Fix default value of enabled property of menu entry

htdocs/core/class/menubase.class.php

@@ -173,6 +173,7 @@ class Menubase
 		global $conf, $langs;
 
 		// Clean parameters
+		if (!isset($this->enabled)) $this->enabled = '1';
 		$this->menu_handler = trim($this->menu_handler);
 		$this->module = trim($this->module);
 		$this->type = trim($this->type);

htdocs/install/mysql/tables/llx_menu.sql

@@ -39,7 +39,7 @@ CREATE TABLE llx_menu
 	langs         varchar(100),								-- Lang file to load for translation
 	level         smallint,									-- Deprecated. Not used.
 	perms         text,										-- Condition to show enabled or disabled
-	enabled       text NULL default '1', 		            -- Condition to show or hide
+	enabled       text NULL, 					            -- Condition to show or hide
 	usertype      integer NOT NULL DEFAULT 0,				-- 0 if menu for all users, 1 for external only, 2 for internal only
 	tms           timestamp