Method writeDecodedBase64

Fleece/Support/Writer.cc:289–294

    void Writer::writeDecodedBase64(slice base64) {
        base64::decoder dec;
        std::vector<char> buf((base64.size + 3) / 4 * 3);
        size_t len = dec.decode(base64.buf, base64.size, buf.data());
        write(buf.data(), len);
    }

}