Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/ilbc/init_decode.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.
  */
 
@@ skipping 74 matching lines @@
 
   /* Set the variables that are used in the ehnahcer */
   iLBCdec_inst->use_enhancer = use_enhancer;
   WebRtcSpl_MemSetW16(iLBCdec_inst->enh_buf, 0, (ENH_BUFL+ENH_BUFL_FILTEROVERHEAD));
   for (i=0;i<ENH_NBLOCKS_TOT;i++) {
     iLBCdec_inst->enh_period[i]=160; /* Q(-4) */
   }
 
   iLBCdec_inst->prev_enh_pl = 0;
 
-  return (iLBCdec_inst->blockl);
+  return (int)(iLBCdec_inst->blockl);
 }