avcodec/utils: correct align value for interplay

Fixes out of array access
Fixes: 452/fuzz-1-ffmpeg_VIDEO_AV_CODEC_ID_INTERPLAY_VIDEO_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
    int ret = 0;

    ff_unlock_avcodec(codec);

    ret = avcodec_open2(avctx, codec, options);

    ff_lock_avcodec(avctx, codec);
    return ret;
}

int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
    int ret = 0;

    ff_unlock_avcodec(codec);

    ret = avcodec_open2(avctx, codec, options);

    ff_lock_avcodec(avctx, codec);
    return ret;
}
