[language_switch] merge r17149 from trunk

error introduced in previous commit


git-svn-id: http://piwigo.org/svn/branches/2.4@17150 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/language_switch/language_switch.inc.php b/plugins/language_switch/language_switch.inc.php
index 7b99f4b06..b5318746a 100644
--- a/plugins/language_switch/language_switch.inc.php
+++ b/plugins/language_switch/language_switch.inc.php
@@ -98,7 +98,7 @@ function language_controler_flags()
   
   $url_starting = get_query_string_diff(array('lang'));
   
-  if ($page['section'] == 'additional_page' and isset($page['additional_page']))
+  if (isset($page['section']) and $page['section'] == 'additional_page' and isset($page['additional_page']))
   {
     $base_url = make_index_url(array('section'=>'page')).'/'.(isset($page['additional_page']['permalink']) ? $page['additional_page']['permalink'] : $page['additional_page']['id']);
   }