Avoiding overflow in cross correlation in NetEq.

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 d7c9f2b9afede2a0a86d20bf33c082626de2eade..c4e3678faf45ff74ca7b15f2debbaa4bbf3687fa 100644
--- a/webrtc/common_audio/signal_processing/cross_correlation.c
+++ b/webrtc/common_audio/signal_processing/cross_correlation.c
@@ -10,6 +10,8 @@
 
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 
+#include <assert.h>
+
 /* C version of WebRtcSpl_CrossCorrelation() for generic platforms. */
 void WebRtcSpl_CrossCorrelationC(int32_t* cross_correlation,
                                  const int16_t* seq1,
@@ -23,7 +25,7 @@ void WebRtcSpl_CrossCorrelationC(int32_t* cross_correlation,
   for (i = 0; i < dim_cross_correlation; i++) {
     int32_t corr = 0;
     for (j = 0; j < dim_seq; j++)
-      corr += (seq1[j] * seq2[j]) >> right_shifts;
+      corr += seq1[j] * seq2[j] >> right_shifts;
     seq2 += step_seq2;
     *cross_correlation++ = corr;
   }