Bug fixed: in history filter screen, when no lines to display, a variable

was not defined but used later. (warning removed)


git-svn-id: http://piwigo.org/svn/trunk@1929 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/history.php

@@ -337,6 +337,7 @@ SELECT
   
   $history_lines = array();
   $user_ids = array();
+  $username_of = array();
   $category_ids = array();
   $image_ids = array();
   $tag_ids = array();