linting

api/edge/callbacks/internal/storage/service.go

@@ -379,7 +379,7 @@ func (r *taskStore) LockNextTask(ctx context.Context, now time.Time, workerID st
 	candidates, err := mutil.GetObjects[taskDoc](ctx, r.logger, query, nil, r.repo)
 	if err != nil {
 		if errors.Is(err, merrors.ErrNoData) {
-			return nil, nil
+			return nil, merrors.ErrNoData
 		}
 		return nil, merrors.InternalWrap(err, "callbacks task query failed")
 	}
@@ -418,7 +418,7 @@ func (r *taskStore) LockNextTask(ctx context.Context, now time.Time, workerID st
 		return mapTaskDoc(locked), nil
 	}
 
-	return nil, nil
+	return nil, merrors.ErrNoData
 }
 
 func (r *taskStore) MarkDelivered(ctx context.Context, taskID bson.ObjectID, httpCode int, latency time.Duration, at time.Time) error {