Fixes to prevent assertion due to 0 PRB allocation Assertion (NPRB>0 && (NPRB + RBstart <= BWPsize)) failed! In PRBalloc_to_locationandbandwidth0() /home/user/openairinterface5g/common/utils/nr/nr_common.c:506 Illegal NPRB/RBstart Configuration (0,51) for BWPsize 51 Probably caused by missing safeguards to prevent computing TBS with 0 PRB as input.