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navigation_history.php
_> 127127     function filter_parameters($parameters) {
  128128       $clean = array();
  129129 
<> 130 -      reset($parameters);
  131 -      while (list($key, $value) = each($parameters)) {
  132 -        if (strpos($key, '_nh-dns') < 1) {
  133 -          $clean[$key] = $value;
   130+      if (is_array($parameters)) {
   131+        reset($parameters);
   132+        while (list($key, $value) = each($parameters)) {
   133+          if (strpos($key, '_nh-dns') < 1) {
   134+            $clean[$key] = $value;
   135+          }
<_ 134136         }
  135137       }
  136138