Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/g722/g722_encode.c

 /*
  * SpanDSP - a series of DSP components for telephony
  *
  * g722_encode.c - The ITU G.722 codec, encode part.
  *
  * Written by Steve Underwood <steveu@coppice.org>
  *
  * Copyright (C) 2005 Steve Underwood
  *
  * All rights reserved.
@@ skipping 184 matching lines @@
 {
 
     int16_t yl;
 
     yl = (rl > 16383) ? 16383 : ((rl < -16384) ? -16384 : rl);
 
     return (yl);
 }
 #endif
 
-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)
 {
     static const int q6[32] =
     {
            0,   35,   72,  110,  150,  190,  233,  276,
          323,  370,  422,  473,  530,  587,  650,  714,
          786,  858,  940, 1023, 1121, 1219, 1339, 1458,
         1612, 1765, 1980, 2195, 2557, 2919,    0,    0
     };
     static const int iln[32] =
     {
@@ skipping 51 matching lines @@
     int wd;
     int wd1;
     int ril;
     int wd2;
     int il4;
     int ih2;
     int wd3;
     int eh;
     int mih;
     int i;
-    int j;
+    size_t j;
     /* Low and high band PCM from the QMF */
     int xlow;
     int xhigh;
-    int g722_bytes;
+    size_t g722_bytes;
     /* Even and odd tap accumulators */
     int sumeven;
     int sumodd;
     int ihigh;
     int ilow;
     int code;
 
     g722_bytes = 0;
     xhigh = 0;
     for (j = 0;  j < len;  )
@@ skipping 132 matching lines @@
         }
         else
         {
             g722_data[g722_bytes++] = (uint8_t) code;
         }
     }
     return g722_bytes;
 }
 /*- End of function --------------------------------------------------------*/
 /*- End of file ------------------------------------------------------------*/