Fix travis errors

htdocs/core/modules/DolibarrModules.class.php

@@ -1552,12 +1552,14 @@ class DolibarrModules           // Can not be abstract, because we need to insta
     /**
      * Adds menu entries
      *
-     * @return  int Error count (0 if OK)
+     * @return  int     Error count (0 if OK)
      */
     function insert_menus()
     {
         global $user;
 
+        if (! is_array($this->menu) || empty($this->menu)) return 0;
+        
         require_once DOL_DOCUMENT_ROOT . '/core/class/menubase.class.php';
 
         $err=0;

htdocs/core/modules/modFTP.class.php

@@ -110,10 +110,6 @@ class modFTP extends DolibarrModules
 		
 		// Menus
 		//-------
-		$this->menu = 1;        // This module add menu entries. They are coded into menu manager.
-		
-
-		// Top menu
 		$this->menu[$r]=array('fk_menu'=>0,
 							  'type'=>'top',
 							  'titre'=>'FTP',

htdocs/core/modules/modOpenSurvey.class.php

@@ -121,21 +121,7 @@ class modOpenSurvey extends DolibarrModules
 
 		// Menus
 		//-------
-		$this->menu = 1;        // This module add menu entries. They are coded into menu manager.
-		/*
-		$this->menu[$r]=array(	'fk_menu'=>0,		    						// Use 'fk_mainmenu=xxx' or 'fk_mainmenu=xxx,fk_leftmenu=yyy' where xxx is mainmenucode and yyy is a leftmenucode
-								'type'=>'top',
-								'titre'=>'Surveys',
-								'mainmenu'=>'opensurvey',
-								'url'=>'/opensurvey/index.php',
-								'langs'=>'opensurvey',
-								'position'=>200,
-                				'enabled'=>'$conf->opensurvey->enabled',         // Define condition to show or hide menu entry. Use '$conf->NewsSubmitter->enabled' if entry must be visible if module is enabled.
-								'perms'=>'$user->rights->opensurvey->read',
-								'target'=>'',
-								'user'=>0);
-		$r++;*/
-
+        $r=0;
 		$this->menu[$r]=array(	'fk_menu'=>'fk_mainmenu=tools',		    // Use 'fk_mainmenu=xxx' or 'fk_mainmenu=xxx,fk_leftmenu=yyy' where xxx is mainmenucode and yyy is a leftmenucode
 								'type'=>'left',
 								'titre'=>'Survey',