enb,mac: fix buffer setting when receiving SBSR

the MAX_LCG is 7 so the loop needs to be inclusive to
set all 8 LCGs to 0

srsenb/src/stack/mac/nr/ue_nr.cc

@@ -107,7 +107,7 @@ int ue_nr::process_pdu(srsran::unique_byte_buffer_t pdu)
         uint32_t buffer_size_bytes                = buff_size_field_to_bytes(sbsr.buffer_size, srsran::SHORT_BSR);
         // Assume all LCGs are 0 if reported SBSR is 0
         if (buffer_size_bytes == 0) {
-          for (uint32_t j = 0; j < SCHED_NR_MAX_LC_GROUP; j++) {
+          for (uint32_t j = 0; j <= SCHED_NR_MAX_LC_GROUP; j++) {
             sched->ul_bsr(rnti, j, 0);
           }
         } else {