Update audio code to use size_t more correctly,

webrtc/common_audio/signal_processing/cross_correlation.c

Index: webrtc/common_audio/signal_processing/cross_correlation.c
diff --git a/webrtc/common_audio/signal_processing/cross_correlation.c b/webrtc/common_audio/signal_processing/cross_correlation.c
index ba34438f4519b051b2f389ced1e70c50770d098b..d7c9f2b9afede2a0a86d20bf33c082626de2eade 100644
--- a/webrtc/common_audio/signal_processing/cross_correlation.c
+++ b/webrtc/common_audio/signal_processing/cross_correlation.c
@@ -14,11 +14,11 @@
 void WebRtcSpl_CrossCorrelationC(int32_t* cross_correlation,
                                  const int16_t* seq1,
                                  const int16_t* seq2,
-                                 int16_t dim_seq,
-                                 int16_t dim_cross_correlation,
+                                 size_t dim_seq,
+                                 size_t dim_cross_correlation,
                                  int right_shifts,
                                  int step_seq2) {
-  int i = 0, j = 0;
+  size_t i = 0, j = 0;
 
   for (i = 0; i < dim_cross_correlation; i++) {
     int32_t corr = 0;