libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_rd.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 449 matching lines @@
   uint8_t *src_y_ptr = x->plane[0].src.buf;
   uint8_t *ref_y_ptr;
   const int num_mv_refs = MAX_MV_REF_CANDIDATES +
                     (cpi->sf.adaptive_motion_search &&
                      block_size < x->max_partition_size);
 
   MV pred_mv[3];
   pred_mv[0] = mbmi->ref_mvs[ref_frame][0].as_mv;
   pred_mv[1] = mbmi->ref_mvs[ref_frame][1].as_mv;
   pred_mv[2] = x->pred_mv[ref_frame];
+  assert(num_mv_refs <= (int)(sizeof(pred_mv) / sizeof(pred_mv[0])));
 
   // Get the sad for each candidate reference mv.
   for (i = 0; i < num_mv_refs; ++i) {
     const MV *this_mv = &pred_mv[i];
 
     max_mv = MAX(max_mv, MAX(abs(this_mv->row), abs(this_mv->col)) >> 3);
     if (is_zero_mv(this_mv) && zero_seen)
       continue;
 
     zero_seen |= is_zero_mv(this_mv);
@@ skipping 169 matching lines @@
       return ROUND_POWER_OF_TWO(5 * q, 2);
     default:
       assert(0 && "bit_depth should be VPX_BITS_8, VPX_BITS_10 or VPX_BITS_12");
       return -1;
   }
 #else
   return 20 * q;
 #endif  // CONFIG_VP9_HIGHBITDEPTH
 }