Prepare to convert various types to size_t.

webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c

Index: webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c b/webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c
index 1e966a7afec5402165220ad12ecdfb58d35976da..103a13650f32c2c54a0bddfd9331bc7710cc880a 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/test/iLBC_testLib.c
@@ -139,6 +139,10 @@ int main(int argc, char* argv[])
 #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
@@ -176,6 +180,10 @@ int main(int argc, char* argv[])
       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);
       }