Fix vulnerability in handling _session argument of utils/save-prefs (#1489382)

Aleksander Machniak

2013-10-17 037af6890fe6fdb84a08d3c86083e847c90ec0ad

 program/lib/Roundcube/rcube_config.php

@@ -192,7 +192,7 @@
     */
    public function get($name, $def = null)
    {
        if (isset($this->prop[$name])) {
        if (array_key_exists($name, $this->prop)) {
            $result = $this->prop[$name];
        }
        else {