Revert "Upconvert various types to int."

webrtc/modules/audio_coding/codecs/ilbc/my_corr.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 11 matching lines @@
  * compute cross correlation between sequences
  *---------------------------------------------------------------*/
 
 void WebRtcIlbcfix_MyCorr(
     int32_t *corr,  /* (o) correlation of seq1 and seq2 */
     int16_t *seq1,  /* (i) first sequence */
     int16_t dim1,  /* (i) dimension first seq1 */
     const int16_t *seq2, /* (i) second sequence */
     int16_t dim2   /* (i) dimension seq2 */
                           ){
-  int16_t max, loops;
-  int scale;
+  int16_t max, scale, loops;
 
   /* Calculate correlation between the two sequences. Scale the
      result of the multiplcication to maximum 26 bits in order
      to avoid overflow */
   max=WebRtcSpl_MaxAbsValueW16(seq1, dim1);
   scale=WebRtcSpl_GetSizeInBits(max);
 
-  scale = 2 * scale - 26;
+  scale = (int16_t)(2 * scale - 26);
   if (scale<0) {
     scale=0;
   }
 
   loops=dim1-dim2+1;
 
   /* Calculate the cross correlations */
   WebRtcSpl_CrossCorrelation(corr, (int16_t*)seq2, seq1, dim2, loops, scale, 1);
 
   return;
 }