crash in SBA decoder with dtx

SBA decoding with DTX at sample rate 32000 with the command lines

./IVAS_cod -sba 3 -dtx -max_band swb 32000 48 input.wav bit
./IVAS_dec HOA3 48 bit_short dec.wav

gives the error

IVAS_dec: lib_com/basop32.c:2430: L_shl: Assertion `0' failed.

in the decoder.

This is the minimal bitstream to reproduce it bit_short

It is probably related to #694 (closed) .