if (s->golden_frame.data[0])
if (s->golden_frame.data[0] && s->golden_frame.data[0] != s->last_frame.data[0])
static int vp3_decode_end(AVCodecContext *avctx){    Vp3DecodeContext *s = avctx->priv_data;    av_free(s->all_fragments);    av_free(s->coded_fragment_list);    av_free(s->superblock_fragments);    av_free(s->superblock_macroblocks);    av_free(s->macroblock_fragments);    av_free(s->macroblock_coding);    /* release all frames */    if (s->golden_frame.data[0])        avctx->release_buffer(avctx, &s->golden_frame);    if (s->last_frame.data[0])        avctx->release_buffer(avctx, &s->last_frame);    /* no need to release the current_frame since it will always be pointing     * to the same frame as either the golden or last frame */    return 0;}