correction instanciation filedownloader

vas/rest/ws/vitis/FileDownloader.class.inc

@@ -14,6 +14,7 @@
 require_once 'Vitis.class.inc';
 require_once ("aws_sdk/aws-autoloader.php");
 require_once ("vmlib/phpUtil.inc");
+require_once "vmlib/files/Files_manager.class.inc";
 
 class FileDownloader extends Vitis {
     /**
@@ -40,6 +41,7 @@ class FileDownloader extends Vitis {
     function __construct($aPath, $aValues, $properties, $bShortcut = false, $oConnection = false) {
         $this->aValues = $aValues;
         $this->aProperties = $properties;
+        $this->oFilesManager = new Files_manager($this->aProperties);
     }
 
     /**