libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_frame_buffers.c

 /*
  *  Copyright (c) 2014 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.
  */
 
 #include <assert.h>
 
 #include "vp9/common/vp9_frame_buffers.h"
 #include "vpx_mem/vpx_mem.h"
 
 int vp9_alloc_internal_frame_buffers(InternalFrameBufferList *list) {
   assert(list != NULL);
   vp9_free_internal_frame_buffers(list);
 
   list->num_internal_frame_buffers =
       VP9_MAXIMUM_REF_BUFFERS + VPX_MAXIMUM_WORK_BUFFERS;
-  list->int_fb = vpx_calloc(list->num_internal_frame_buffers,
-                            sizeof(*list->int_fb));
+  list->int_fb =
+      (InternalFrameBuffer *)vpx_calloc(list->num_internal_frame_buffers,
+                                        sizeof(*list->int_fb));
   return (list->int_fb == NULL);
 }
 
 void vp9_free_internal_frame_buffers(InternalFrameBufferList *list) {
   int i;
 
   assert(list != NULL);
 
   for (i = 0; i < list->num_internal_frame_buffers; ++i) {
     vpx_free(list->int_fb[i].data);
@@ skipping 37 matching lines @@
   fb->priv = &int_fb_list->int_fb[i];
   return 0;
 }
 
 int vp9_release_frame_buffer(void *cb_priv, vpx_codec_frame_buffer_t *fb) {
   InternalFrameBuffer *const int_fb = (InternalFrameBuffer *)fb->priv;
   (void)cb_priv;
   int_fb->in_use = 0;
   return 0;
 }