Fix: removed warning

htdocs/install/etape2.php

@@ -607,5 +607,5 @@ dolibarr_install_syslog("--- install/etape2.php end", LOG_INFO);
 
 pFooter(!$ok,$setuplang);
 
-$db->close();
+if (isset($db) && is_object($db)) $db->close();
 ?>
\ No newline at end of file