authentication : if there is no lastname/firstname provided, don't generate a warning

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@3035 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

authentication.php

@@ -163,6 +163,10 @@ class authentication
     call_user_func ($this->loggingFunc,
                     LOG_NOTICE,
                     "Logging in for '$authparams->email'");
+    if (! array_key_exists ("lastname", $res))
+      $res["lastname"] = null;
+    if (! array_key_exists ("firstname", $res))
+      $res["firstname"] = null;
     $session = new \authsession ();
     $session-> savedata ($authparams->email, $authparams->password,
                           $res["lastname"], $res["firstname"]);