### Basic info - Commit SHA: 478cacfb (from !770) ### Bug description Access to the transport channel buffers was using the wrong TC handle variable A fix is provided in !770 Clang (UBSAN) sanitizer test in pipeline found an error: <!--- Copy sanitizer traceback from command line here --> ``` scripts/ref/logs/stv51MC48c_Multi_channel_5_1_at_64_kbps_48kHz_in_48kHz_out_BINAURAL_ROOM_out_Headrotation.dec.BINAURAL_ROOM_IR.txt:SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-offset lib_dec/ivas_jbm_dec.c:752:20 in scripts/ref/logs/stv51MC48c_Multi_channel_5_1_at_64_kbps_48kHz_in_48kHz_out_BINAURAL_ROOM_out_Headrotation_external_orientation.dec.BINAURAL_ROOM_IR.txt:SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-offset lib_dec/ivas_jbm_dec.c:752:20 in scripts/ref/logs/stv51MC48c_Multi_channel_5_1_at_64_kbps_48kHz_in_48kHz_out_BINAURAL_out_Headrotation.dec.BINAURAL.txt:SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-offset lib_dec/ivas_jbm_dec.c:752:20 in scripts/ref/logs/stv51MC48c_Multi_channel_5_1_at_64_kbps_48kHz_in_48kHz_out_BINAURAL_out_Headrotation_external_orientation.dec.BINAURAL.txt:SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-offset lib_dec/ivas_jbm_dec.c:752:20 in ``` <!--- Copy test job URL here --> Link to test pipeline: https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/pipelines/20168 ### Ways to reproduce <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary. -->