Change initialization of $filter in order to prevent of problem with some systems

Merge BSF 2110:2111 into branch-1_7


git-svn-id: http://piwigo.org/svn/branches/branch-1_7@2112 68402e56-0260-453c-a942-63ccdbb3a9ee

include/common.inc.php

@@ -113,6 +113,7 @@ $user = array();
 $lang = array();
 $header_msgs = array();
 $header_notes = array();
+$filter = array();
 
 @include(PHPWG_ROOT_PATH .'include/mysql.inc.php');
 if (!defined('PHPWG_INSTALLED'))
@@ -251,8 +252,6 @@ if (!empty($conf['filter_pages']) and get_filter_page_value('used'))
 }
 else
 {
-  // global variable for filter
-  $filter = array();
   $filter['enabled'] = false;
 }