Fix error when using back button after sending an email (#1490009)

Aleksander Machniak

2015-07-31 4b72a1f49843aa64cdf90301ae71035c3e6cf30a

 program/steps/mail/sendmail.inc

@@ -958,3 +958,19 @@

    return false;
}

/**
 * clear message composing settings
 */
function rcmail_compose_cleanup($id)
{
    if (!isset($_SESSION['compose_data_'.$id])) {
        return;
    }

    $rcmail = rcmail::get_instance();
    $rcmail->plugins->exec_hook('attachments_cleanup', array('group' => $id));
    $rcmail->session->remove('compose_data_'.$id);

    $_SESSION['last_compose_session'] = $id;
}