Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/ilbc/cb_search.h

 /*
  *  Copyright (c) 2011 The WebRTC 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.
  */
 
 /******************************************************************
 
  iLBC Speech Coder ANSI-C Source Code
 
  WebRtcIlbcfix_CbSearch.h
 
 ******************************************************************/
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_CB_SEARCH_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_CB_SEARCH_H_
 
 void WebRtcIlbcfix_CbSearch(
     IlbcEncoder *iLBCenc_inst,
     /* (i) the encoder state structure */
     int16_t *index,  /* (o) Codebook indices */
     int16_t *gain_index, /* (o) Gain quantization indices */
     int16_t *intarget, /* (i) Target vector for encoding */
     int16_t *decResidual,/* (i) Decoded residual for codebook construction */
-    int16_t lMem,  /* (i) Length of buffer */
-    int16_t lTarget,  /* (i) Length of vector */
+    size_t lMem,  /* (i) Length of buffer */
+    size_t lTarget,  /* (i) Length of vector */
     int16_t *weightDenum,/* (i) weighting filter coefficients in Q12 */
-    int16_t block  /* (i) the subblock number */
+    size_t block  /* (i) the subblock number */
                             );
 
 #endif