[non-BE][split-non-BE] Resolve "MSAN: use-of-uninitialized-value in lib_enc/ivas_mct_enc_mct_fx.c:1115:21"

multrusrequested to merge
basop-2472-msan-use-of-uninitialized-value-in-lib_enc-ivas_mct_enc_mct_fx-c-1115-21 into main

Reason why this change is needed

  • Wrong channel of sp_aud_decision0[] is used in BASOP; in float, this refers always to ch1. The second channel might be uninitialited.

Description of the change

  • Use correct channel of sp_aud_decision0[]; brings BASOP in line with float.

Affected operating points

  • Non-BE: IGF decisions might change, but bitstream is backward compatible and impact is perceptually small.

Closes #2472 (closed)

Edited by multrus

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