#vulnerable code 
                                @Override
    public void releaseSub() {
        try {
            if (info != null) {
                info.session.close();
                info.conn.close();
            }
        } catch (final JMSException ex) {
            LOGGER.error("Error closing " + getName(), ex);
        } finally {
            info = null;
        }
    } 
                            #location 11 
                            #vulnerability type THREAD_SAFETY_VIOLATION
#fixed code
                                @Override
    public void releaseSub() {
        if (info != null) {
            cleanup(false);
        }
    }