Try fix repeatedly getting a new NodeNum (#4670)

src/mesh/NodeDB.cpp

@@ -121,6 +121,8 @@ NodeDB::NodeDB()
     owner.hw_model = HW_VENDOR;
     // Ensure user (nodeinfo) role is set to whatever we're configured to
     owner.role = config.device.role;
+    // Ensure macaddr is set to our macaddr as it will be copied in our info below
+    memcpy(owner.macaddr, ourMacAddr, sizeof(owner.macaddr));
 
     // Include our owner in the node db under our nodenum
     meshtastic_NodeInfoLite *info = getOrCreateMeshNode(getNodeNum());
@@ -1194,4 +1196,4 @@ void recordCriticalError(meshtastic_CriticalErrorCode code, uint32_t address, co
     LOG_ERROR("A critical failure occurred, portduino is exiting...");
     exit(2);
 #endif
-}
+}