Prepare to convert various types to size_t.

webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.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 121 matching lines @@
 #endif
     blockcount++;
 
     /* encoding */
     fprintf(stderr, "--- Encoding block %i --- ",blockcount);
 #ifdef SPLIT_10MS
     len=WebRtcIlbcfix_Encode(Enc_Inst, data, 80, encoded_data);
 #else
     len=WebRtcIlbcfix_Encode(Enc_Inst, data, (short)(mode<<3), encoded_data);
 #endif
+    if (len < 0) {
+      fprintf(stderr, "Error encoding\n");
+      exit(0);
+    }
     fprintf(stderr, "\r");
 
 #ifdef JUNK_DATA
     for ( i = 0; i < len; i++) {
       encoded_data[i] = (short) (encoded_data[i] + (short) rand());
     }
 #endif
     /* write byte file */
     if(len != 0){ //len may be 0 in 10ms split case
       fwrite(encoded_data,1,len,efileid);
@@ skipping 17 matching lines @@
         }
       } else {
         pli=1;
       }
 
       /* decoding */
       fprintf(stderr, "--- Decoding block %i --- ",blockcount);
       if (pli==1) {
         len=WebRtcIlbcfix_Decode(Dec_Inst, encoded_data, (int16_t)len, data,
                                  &speechType);
+        if (len < 0) {
+          fprintf(stderr, "Error decoding\n");
+          exit(0);
+        }
       } else {
         len=WebRtcIlbcfix_DecodePlc(Dec_Inst, data, 1);
       }
       fprintf(stderr, "\r");
 
       /* write output file */
       fwrite(data,sizeof(short),len,ofileid);
     }
   }
 
@@ skipping 11 matching lines @@
   WebRtcIlbcfix_EncoderFree(Enc_Inst);
   WebRtcIlbcfix_DecoderFree(Dec_Inst);
 
   /* close files */
   fclose(ifileid);
   fclose(efileid);
   fclose(ofileid);
 
   return 0;
 }