Encoder crash for ParamMC 7.1 at 96kbps in ivas_param_mc_param_est_enc_fx()
# Basic info
<!--- Add commit SHA used to reproduce -->
- Float reference:
- Encoder (float): N/A
- Decoder (float): N/A
- Fixed point:
- Encoder (fixed): 3d9faa50d5fce8c82a74df8924965484228a8010
- Decoder (fixed): N/A
# Bug description
The fixed point encoder crashes with an abort in basop32.c:3493 `div_s()`:




# Ways to reproduce
Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1154
<!-- Commandline or script -->
```bash
./IVAS_cod_fx -q -mc 7_1 -max_band WB 96000 16 am3aa1s08_16.wav bit
```
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issue