Update audio code to use size_t more correctly,

webrtc/common_audio/signal_processing/sqrt_of_one_minus_x_squared.c

 /*
  *  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.
  */
 
 
 /*
  * This file contains the function WebRtcSpl_SqrtOfOneMinusXSquared().
  * The description header can be found in signal_processing_library.h
  *
  */
 
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 
-void WebRtcSpl_SqrtOfOneMinusXSquared(int16_t *xQ15, int vector_length,
+void WebRtcSpl_SqrtOfOneMinusXSquared(int16_t *xQ15, size_t vector_length,
                                       int16_t *yQ15)
 {
     int32_t sq;
-    int m;
+    size_t m;
     int16_t tmp;
 
     for (m = 0; m < vector_length; m++)
     {
         tmp = xQ15[m];
         sq = tmp * tmp;  // x^2 in Q30
         sq = 1073741823 - sq; // 1-x^2, where 1 ~= 0.99999999906 is 1073741823 in Q30
         sq = WebRtcSpl_Sqrt(sq); // sqrt(1-x^2) in Q15
         yQ15[m] = (int16_t)sq;
     }
 }