routes: with exactly 1 agency, fix handling of missing agency_id 🐛

Author: derhuerst

lib/routes.js

@@ -244,7 +244,7 @@ const importData = async (db, pathToRoutes, opt, workingState) => {
 	// The GTFS spec allows routes.agency_id to be empty/null if there is exactly one agency in the feed.
 	// It seems that GTFS has allowed this at least since 2016:
 	// https://github.com/google/transit/blame/217e9bf/gtfs/spec/en/reference.md#L544-L554
-	const exactly1Agency = workingState.nrOfRowsByName.get('agency') === 1
+	const exactly1Agency = workingState.nrOfRowsByName.get('agency') === 1n
 	// todo: throw special error indicating an error in the input data? does the foreign key constraint achieve this implicitly? old code:
 	// throw new DataError(
 	// 	'routes',