fix un-initialized var

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -1255,6 +1255,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     /* TODO same calculation for MCS table as done in UL */
     dlsch_config_pdu_1_1->mcs_table = (pdsch_Config->mcs_Table) ? (*pdsch_Config->mcs_Table + 1) : 0;
     /*PTRS configuration */
+    dlsch_config_pdu_1_1->pduBitmap = 0;
     if(pdsch_Config->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS != NULL) {
       valid_ptrs_setup = set_dl_ptrs_values(pdsch_Config->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup,
                                             dlsch_config_pdu_1_1->number_rbs, dlsch_config_pdu_1_1->mcs, dlsch_config_pdu_1_1->mcs_table,