message: Fix for overflow in iLBC code.
  The calculation of the necessary number of shifts is not correct, leading to an overflow.
  Cr-Commit-Position: refs/heads/master@{#32855}
diff: @@ -202,10 +202,10 @@ size_t // (o) Estimated lag in end of in[]
  /* scaling */
  max16 = WebRtcSpl_MaxAbsValueW16(regressor, plc_blockl + 3 - 1);
  - if (max16>5000)
  - shifts=2;
  - else
  - shifts=0;
  +
  + const int64_t max_val = plc_blockl * max16 * max16;
  + const int32_t factor = max_val >> 31;
  + shifts = factor == 0 ? 0 : 31 - WebRtcSpl_NormW32(factor);
  /* compute cross correlation */
  WebRtcSpl_CrossCorrelation(corr32, target, regressor, plc_blockl, 3, shifts,
  