Fix test error in selection bib: $bib is an object, not int

library/ZendAfi/Controller/Plugin/SelectionBib.php

@@ -141,7 +141,7 @@ class ZendAfi_Controller_Plugin_SelectionBib extends Zend_Controller_Plugin_Abst
 				return fetchOne('select count(*) from exemplaires where id_bib in (select ID_SITE from bib_c_site where ID_ZONE=\''. $zone . '\')');
 			};
 		} elseif ($bib)	{
-			$clef = 'b' . $bib;
+			$clef = 'b' . $bib->getId();
 			$closure = function() use ($bib) { return $bib->numberOfExemplaires();};
 		} else {
 			$clef = 'all';