Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/codecs/ilbc/state_search.c

Index: webrtc/modules/audio_coding/codecs/ilbc/state_search.c
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/state_search.c b/webrtc/modules/audio_coding/codecs/ilbc/state_search.c
index b2214c786f5755d7f4c7d0812ee07bee2140e335..295c543d84e0f4712185588c30f9a4981e355646 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/state_search.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/state_search.c
@@ -33,7 +33,7 @@ void WebRtcIlbcfix_StateSearch(
     int16_t *syntDenum,  /* (i) lpc synthesis filter */
     int16_t *weightDenum  /* (i) weighting filter denuminator */
                                ) {
-  int16_t k, index;
+  size_t k, index;
   int16_t maxVal;
   int16_t scale, shift;
   int32_t maxValsq;
@@ -64,9 +64,9 @@ void WebRtcIlbcfix_StateSearch(
 
   /* Run the Zero-Pole filter (Ciurcular convolution) */
   WebRtcSpl_MemSetW16(residualLongVec, 0, LPC_FILTERORDER);
-  WebRtcSpl_FilterMAFastQ12(
-      residualLong, sampleMa,
-      numerator, LPC_FILTERORDER+1, (int16_t)(iLBCenc_inst->state_short_len + LPC_FILTERORDER));
+  WebRtcSpl_FilterMAFastQ12(residualLong, sampleMa, numerator,
+                            LPC_FILTERORDER + 1,
+                            iLBCenc_inst->state_short_len + LPC_FILTERORDER);
   WebRtcSpl_MemSetW16(&sampleMa[iLBCenc_inst->state_short_len + LPC_FILTERORDER], 0, iLBCenc_inst->state_short_len - LPC_FILTERORDER);
 
   WebRtcSpl_FilterARFastQ12(