Fix notices

Pour mode CLI sans paramètres
PHP Notice:  Undefined offset: 2 in
/server/www/domains/Polyfony2/Private/Vendor/Polyfony/pfRequest.php on
line 34

PHP Notice:  Undefined index: REQUEST_METHOD in
/server/www/domains/Polyfony2/Private/Vendor/Polyfony/pfRequest.php on
line 38