Linter pleasing

application-framework/registration/registration.go

@@ -2,6 +2,7 @@ package registration
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"code.fbi.h-da.de/danet/gosdn/api/go/gosdn/app"
@@ -15,7 +16,12 @@ func Register(ctx context.Context, gosdnAddress, name, token string) (string, er
 	if err != nil {
 		return "", err
 	}
-	defer conn.Close()
+	defer func() {
+		if ferr := conn.Close(); ferr != nil {
+			fErrString := ferr.Error()
+			err = fmt.Errorf("InternalError=%w DeferError=%+s", err, fErrString)
+		}
+	}()
 
 	appService := app.NewAppServiceClient(conn)