The NDPU priority is now passed through the stack via apdu.c or h_apdu.c module so the MS/TP compare DER function can include the value in the comparison. (#1119)

ports/linux/dlmstp_port.c

@@ -507,15 +507,11 @@ static bool dlmstp_compare_data_expecting_reply(
                      "NPDU Protocol Version mismatch.\n");
         return false;
     }
-#if 0
-    /* the NDPU priority doesn't get passed through the stack, and
-       all outgoing messages have NORMAL priority */
     if (request.npdu_data.priority != reply.npdu_data.priority) {
-        debug_printf(
-            "DLMSTP: DER Compare failed: " "NPDU Priority mismatch.\n");
+        debug_printf("DLMSTP: DER Compare failed: "
+                     "NPDU Priority mismatch.\n");
         return false;
     }
-#endif
     if (!bacnet_address_same(&request.address, &reply.address)) {
         debug_printf("DLMSTP: DER Compare failed: "
                      "BACnet Address mismatch.\n");