libvpx: Pull from upstream

source/libvpx/examples/vpx_temporal_svc_encoder.c

 /*
  *  Copyright (c) 2012 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 645 matching lines @@
           1000 * (float)cx_time / (double)(frame_cnt * 1000000),
           1000000 * (double)frame_cnt / (double)cx_time);
 
   if (vpx_codec_destroy(&codec))
     die_codec(&codec, "Failed to destroy codec");
 
   // Try to rewrite the output file headers with the actual frame count.
   for (i = 0; i < cfg.ts_number_layers; ++i)
     vpx_video_writer_close(outfile[i]);
 
+  vpx_img_free(&raw);
   return EXIT_SUCCESS;
 }