OSBA decoder crashes with output format MC 5_1, 7_1, 5_1_2, and 5_1_4

Basic info

• Commit SHA: 49e2596d (latest main)
• Platform: Observed on Windows

Bug description

OSBA mode crashes the decoder with output format MC 5_1, 7_1, 5_1_2, and 5_1_4.

Ways to reproduce

Example command with output format MC 5_1:

IVAS_cod -ism_sba 4 3 scripts/testv/stvISM1.csv scripts/testv/stvISM2.csv scripts/testv/stvISM3.csv scripts/testv/stvISM4.csv 512000 48 scripts/testv/stvOSBA_4ISM_3OA48c.wav stream.bit
IVAS_dec 5_1 48 stream.bit out.wav