Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/g722/g722_enc_dec.h

 /*
  * SpanDSP - a series of DSP components for telephony
  *
  * g722.h - The ITU G.722 codec.
  *
  * Written by Steve Underwood <steveu@coppice.org>
  *
  * Copyright (C) 2005 Steve Underwood
  *
  *  Despite my general liking of the GPL, I place my own contributions 
@@ skipping 121 matching lines @@
 } G722DecoderState;
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 G722EncoderState* WebRtc_g722_encode_init(G722EncoderState* s,
                                           int rate,
                                           int options);
 int WebRtc_g722_encode_release(G722EncoderState *s);
-int WebRtc_g722_encode(G722EncoderState *s,
-                       uint8_t g722_data[],
-                       const int16_t amp[],
-                       int len);
+size_t WebRtc_g722_encode(G722EncoderState *s,
+                          uint8_t g722_data[],
+                          const int16_t amp[],
+                          size_t len);
 
 G722DecoderState* WebRtc_g722_decode_init(G722DecoderState* s,
                                           int rate,
                                           int options);
 int WebRtc_g722_decode_release(G722DecoderState *s);
-int WebRtc_g722_decode(G722DecoderState *s,
-                       int16_t amp[],
-                       const uint8_t g722_data[],
-                       int len);
+size_t WebRtc_g722_decode(G722DecoderState *s,
+                          int16_t amp[],
+                          const uint8_t g722_data[],
+                          size_t len);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif