Complexity measurement crashes: ISM+ encoder

Basic info

• Fixed point: ca8df168
• related to #1426 (closed)

Bug description

ISM+3 encoder crashes in the complexity measurement jobs: https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/jobs/421575

Assertion failed: (0), function shl, file basop32.c, line 792.

Ways to reproduce

python3 scripts/runIvasCodec.py -p ../ivas-script-configs/ci_linux_ltv_local.json -m ISM+3_b24_4_dtx_wb_cbr ISM+3_b32_dtx_wb_cbr ISM+3_b32_dtx_swb_cbr ISM+3_b24_4_dtx_swb_cbr ISM+3_b32_dtx_fb_cbr -e ./IVAS_cod_fx -d ./IVAS_dec_fx -f ../ivas-codec/ci/complexity_measurements/ep_10pct_fer.g192 --oc stereo

or e.g.

/Users/knj/Documents/IVAS/ivas-basop/IVAS_cod_fx -dtx -ism +3 NULL NULL NULL -max_band swb 24400 32 /tmp/out/pcm/ltv48_3ISM_32_ISM3.pcm /tmp/out/enc/ltv48_3ISM_ISM+3_b24_4_dtx_swb_cbr.192