libvpx: Pull from upstream

source/libvpx/vpx/src/vpx_decoder.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 36 matching lines @@
     ctx->name = iface->name;
     ctx->priv = NULL;
     ctx->init_flags = flags;
     ctx->config.dec = cfg;
 
     res = ctx->iface->init(ctx, NULL);
     if (res) {
       ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
       vpx_codec_destroy(ctx);
     }
-
-    if (ctx->priv)
-      ctx->priv->iface = ctx->iface;
   }
 
   return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t       *iface,
                                            const uint8_t         *data,
                                            unsigned int           data_sz,
                                            vpx_codec_stream_info_t *si) {
@@ skipping 117 matching lines @@
   } else if (!ctx->iface || !ctx->priv ||
              !(ctx->iface->caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) {
     res = VPX_CODEC_ERROR;
   } else {
     res = ctx->iface->dec.set_fb_fn(ctx->priv->alg_priv, cb_get, cb_release,
                                     cb_priv);
   }
 
   return SAVE_STATUS(ctx, res);
 }