authparams : do not set the cookie in session, if it doesn't exists. No need to set a cookie on user side if it is not needed

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@6000 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

authparams.php

@@ -69,7 +69,7 @@ class authparams
   // {{{
   {
     if (!isset ($_SESSION) || session_id () === "")
-      session_start ();
+      throw new \Exception ("No session previously enabled", 403);
     if (!isset ($_SESSION["domframework"]["auth"]["email"]) ||
         !isset ($_SESSION["domframework"]["auth"]["password"]))
       throw new \Exception ("No previous email in session", 403);