Fix drb_id to be aligned with the current implementation of one DRB per PDU Session

openair2/RRC/NR/rrc_gNB_NGAP.c

@@ -778,7 +778,7 @@ void rrc_gNB_process_NGAP_PDUSESSION_SETUP_REQ(MessageDef *msg_p, instance_t ins
     for (int j=0; j < pdu->numDRB2Setup; j++) {
       DRB_nGRAN_to_setup_t *drb = pdu->DRBnGRanList + j;
 
-      drb->id = i + j + 1;
+      drb->id = i + j + UE->nb_of_pdusessions;
 
       drb->defaultDRB = E1AP_DefaultDRB_true;