Fix for SBO in impd_drc_selection_process_drcset_selection.c

Index k is incremented and used as an index of
selection_candidate_info_step_2 array. k can be
max (str_drc_instruction_str->dwnmix_id_count *
selection_candidate_step_2_count), this can be
more than max size of selection_candidate_info_step_2
array.

Hence added a check before assignment as fix.

Bug:147331996
Test:poc in bug

Change-Id: I1ffa88eddfcef93ab15a08599270924d54cdf1de
1 file changed