Update libvpx snapshot to v0.9.7-p1 (Cayuga).

source/libvpx/vp8/decoder/arm/dequantize_arm.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.
  */
 
 
 #include "vpx_ports/config.h"
 #include "vp8/decoder/dequantize.h"
 #include "vp8/common/idct.h"
 #include "vpx_mem/vpx_mem.h"
 
 #if HAVE_ARMV7
 extern void vp8_dequantize_b_loop_neon(short *Q, short *DQC, short *DQ);
 #endif
 
 #if HAVE_ARMV6
 extern void vp8_dequantize_b_loop_v6(short *Q, short *DQC, short *DQ);
 #endif
 
 #if HAVE_ARMV7
 
 void vp8_dequantize_b_neon(BLOCKD *d)
 {
-    int i;
     short *DQ  = d->dqcoeff;
     short *Q   = d->qcoeff;
     short *DQC = d->dequant;
 
     vp8_dequantize_b_loop_neon(Q, DQC, DQ);
 }
 #endif
 
 #if HAVE_ARMV6
 void vp8_dequantize_b_v6(BLOCKD *d)
 {
-    int i;
     short *DQ  = d->dqcoeff;
     short *Q   = d->qcoeff;
     short *DQC = d->dequant;
 
     vp8_dequantize_b_loop_v6(Q, DQC, DQ);
 }
 #endif