ctucx.git: trainsearch

dataStorage: fix history-entry duplication

diff --git a/src/dataStorage.js b/src/dataStorage.js
@@ -83,8 +83,11 @@ class IDBStorage {
 		let proms = journeyEntries.map(j => {
 			journeyStore.put(j);
 		});
+
+		if (overviewEntry.historyEntryId === undefined)
+			overviewEntry.historyEntryId = await journeysHistoryStore.put(historyEntry);
+
 		proms.push(journeysOverviewStore.put(overviewEntry));
-		proms.push(journeysHistoryStore.put(historyEntry));
 		proms.push(tx.done);
 		await Promise.all(proms);
 	}