[VOL-4104] openonu adapter panic OnuIndicationRequest message processing

Change-Id: I57be3248c0ba689f2b28862a0f3ca67c54f6181f
diff --git a/internal/pkg/onuadaptercore/device_handler.go b/internal/pkg/onuadaptercore/device_handler.go
index 67fccc7..15d8c4e 100644
--- a/internal/pkg/onuadaptercore/device_handler.go
+++ b/internal/pkg/onuadaptercore/device_handler.go
@@ -1672,8 +1672,9 @@
 		logger.Errorw(ctx, "No valid OnuDevice -aborting", log.Fields{"device-id": dh.deviceID})
 		return fmt.Errorf("no valid OnuDevice: %s", dh.deviceID)
 	}
-	dh.pOnuOmciDevice.PDevOmciCC.CancelRequestMonitoring()
-
+	if pDevEntry.PDevOmciCC != nil {
+		pDevEntry.PDevOmciCC.CancelRequestMonitoring()
+	}
 	if includingMibSyncFsm {
 		pDevEntry.CancelProcessing(ctx)
 	}