Level drop at end of ltv stereo file

Basic info

• Encoder and Decoder (float): db364042
• Encoder (fixed): d3f2d47a

Bug description

At the end of the stereo ltv signal, there is a sine sweep signal with increasing frequency. Encoding it with the BASOP encoder at 24.4kbps introduces a small drop in signal level which is not there in the float codec:

Ways to reproduce

./IVAS_cod_fx -stereo -dtx 24400 32 ltv32_STEREO.wav bit
./IVAS_dec_flt stereo 32 bit out.wav