libvpx: Pull from upstream

source/libvpx/vp8/common/postproc.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 500 matching lines @@
  *  SPECIAL NOTES : None.
  *
  ****************************************************************************/
 void vp8_plane_add_noise_c(unsigned char *Start, char *noise,
                            char blackclamp[16],
                            char whiteclamp[16],
                            char bothclamp[16],
                            unsigned int Width, unsigned int Height, int Pitch)
 {
     unsigned int i, j;
+    (void)bothclamp;
 
     for (i = 0; i < Height; i++)
     {
         unsigned char *Pos = Start + i * Pitch;
         char  *Ref = (char *)(noise + (rand() & 0xff));
 
         for (j = 0; j < Width; j++)
         {
             if (Pos[j] < blackclamp[0])
                 Pos[j] = blackclamp[0];
@@ skipping 665 matching lines @@
 
     *dest = oci->post_proc_buffer;
 
     /* handle problem with extending borders */
     dest->y_width = oci->Width;
     dest->y_height = oci->Height;
     dest->uv_height = dest->y_height / 2;
     return 0;
 }
 #endif