[VOL-4122] openonuAdapterGo - HW-test: crash due to unresponsive rw-core

Change-Id: Ia04de8387d655f52dbc26ca1f0809038db19dbe9
diff --git a/internal/pkg/onuadaptercore/device_handler.go b/internal/pkg/onuadaptercore/device_handler.go
index 3dd76ff..af5cb57 100644
--- a/internal/pkg/onuadaptercore/device_handler.go
+++ b/internal/pkg/onuadaptercore/device_handler.go
@@ -2419,6 +2419,7 @@
 	if err != nil || parentDevice == nil {
 		logger.Errorw(ctx, "Failed to fetch parent device for OnuEvent",
 			log.Fields{"parentID": dh.parentID, "err": err})
+		return //TODO with VOL-3045: rw-core is unresponsive: report error and/or perform self-initiated onu-reset?
 	}
 	oltSerialNumber := parentDevice.SerialNumber