src/main/java/com/bazaarvoice/jackson/rison/RisonParser.java
@Override
    protected void _releaseBuffers()
            throws IOException
    {
        super._releaseBuffers();
        char[] buf = _inputBuffer;
        if (buf != null) {
            _inputBuffer = null;
            _ioContext.releaseTokenBuffer(buf);
        }
    }
@Override
    protected void _releaseBuffers()
            throws IOException
    {
        super._releaseBuffers();
        char[] buf = _inputBuffer;
        if (buf != null) {
            _inputBuffer = null;
            _ioContext.releaseTokenBuffer(buf);
        }
    }
Method called to release internal buffers owned by the base
reader. This may be called along with {@link #_closeInput} (for
example, when explicitly closing this reader instance), or
separately (if need be).