Nettoyage exception PDOException non lancée puisque qu'inexistante.

<?php

namespace UnicaenAuth\Authentication\Adapter;

use PDOException;

use Zend\ServiceManager\Exception\ServiceNotFoundException;

use UnicaenAuth\Options\ModuleOptions;

use Zend\ServiceManager\Exception\ServiceNotFoundException;

use Zend\ServiceManager\ServiceManager;

use Zend\ServiceManager\ServiceManagerAwareInterface;

use ZfcUser\Authentication\Adapter\AdapterChainEvent as AuthEvent;

        try {

            $result = parent::authenticate($e);

        }

        catch (PDOException $e) {

            return false;

        }

        catch (ServiceNotFoundException $e) {

            return false;

        }