av_freep(&c->decomp_buf);
static int decode_end(AVCodecContext *avctx){    CamtasiaContext * const c = (CamtasiaContext *)avctx->priv_data;    if (c->pic.data[0])        avctx->release_buffer(avctx, &c->pic);#ifdef CONFIG_ZLIB    inflateEnd(&(c->zstream));#endif    return 0;}