libvpxenc: token_parts is VP8 specific

Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/libvpxenc.c

@@ -427,7 +427,8 @@ static av_cold int vpx_init(AVCodecContext *avctx,
     if (ctx->arnr_type >= 0)
         codecctl_int(avctx, VP8E_SET_ARNR_TYPE,        ctx->arnr_type);
     codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
-    codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS,  av_log2(avctx->slices));
+    if (avctx->codec_id == AV_CODEC_ID_VP8)
+        codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS,  av_log2(avctx->slices));
     codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD,  avctx->mb_threshold);
     codecctl_int(avctx, VP8E_SET_CQ_LEVEL,          ctx->crf);
     if (ctx->max_intra_rate >= 0)