Fixed a small type preventing query parameters from showing up debug …

…messages.

lib/plugins/authpdo/auth.php

@@ -657,7 +657,7 @@ protected function _query($sql, $arguments = array()) {
                 } else {
                     $sth->bindValue($key, $value);
                 }
-                $param[$key] = $value; //remember for debugging
+                $params[$key] = $value; //remember for debugging
             }
 
             $sth->execute();