iSAC fix entropy coder: Recently added DCHECK could in fact trigger

webrtc/modules/audio_coding/codecs/isac/fix/source/entropy_coding.c

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 216 matching lines @@
     CorrQ11[k] = (sum * tmpGain + round) >> shftVal;
   }
   sum = CorrQ11[0] << 7;
   for (n = 0; n < FRAMESAMPLES/8; n++)
     CurveQ16[n] = sum;
 
   for (k = 1; k < AR_ORDER; k += 2) {
     for (n = 0; n < FRAMESAMPLES/8; n++) {
       const int64_t p =
           (WebRtcIsacfix_kCos[k][n] * (int64_t)CorrQ11[k + 1] + 2) >> 2;
-      RTC_DCHECK_EQ(p, (int32_t)p);  // p fits in 32 bits
-      CurveQ16[n] += (int32_t)p;
+      CurveQ16[n] += WebRtcSpl_SatW64ToW32(p);
     }
   }
 
   CS_ptrQ9 = WebRtcIsacfix_kCos[0];
 
   /* If CorrQ11[1] too large we avoid getting overflow in the calculation by shifting */
   sh=WebRtcSpl_NormW32(CorrQ11[1]);
   if (CorrQ11[1]==0) /* Use next correlation */
     sh=WebRtcSpl_NormW32(CorrQ11[2]);
 
@@ skipping 1787 matching lines @@
 
     index_gQQ[k] = pos2QQ + WebRtcIsacfix_kQuantMinGain[k]; //ATTN: ok?
     if (index_gQQ[k] < 0) {
       index_gQQ[k] = 0;
     }
     else if (index_gQQ[k] > WebRtcIsacfix_kMaxIndGain[k]) {
       index_gQQ[k] = WebRtcIsacfix_kMaxIndGain[k];
     }
   }
 }