Resolved issue 0000697: with generic user a author name is necessary to comment picture.

+ Change way to determinate if user is a guest (use functions like is_admin)


git-svn-id: http://piwigo.org/svn/trunk@2029 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions_html.inc.php

@@ -574,7 +574,7 @@ function access_denied()
       get_root_url().'identification.php?redirect='
       .urlencode(urlencode($_SERVER['REQUEST_URI']));
 
-  if ( isset($user['is_the_guest']) and !$user['is_the_guest'] )
+  if ( isset($user) and !is_a_guest() )
   {
     echo '<div style="text-align:center;">'.$lang['access_forbiden'].'<br />';
     echo '<a href="'.get_root_url().'identification.php">'.$lang['identification'].'</a>&nbsp;';