hackfest : library widget fix fatal error

library/ZendAfi/View/Helper/Accueil/Library.php

@@ -35,6 +35,10 @@ class ZendAfi_View_Helper_Accueil_Library extends ZendAfi_View_Helper_Accueil_Ba
 
   public function getHtml() {
     $this->titre = $this->preferences['titre'];
+
+    if(!$this->_default_filters && isset($this->preferences['default_filters']))
+      $this->_default_filters = $this->preferences['default_filters'];
+
     $this->contenu = $this->getContent();
     return $this->getHtmlArray();
   }