Don't crash when there is no transaction

src/transaction/ShowTransaction.js

@@ -7,7 +7,7 @@ import { printMoney, printDate, printTransactionID } from "../util";
 
 function ShowTransaction() {
   const { id } = useParams();
-  const [transaction, setTransaction] = useState({});
+  const [transaction, setTransaction] = useState({ ID: 0 });
 
   let show_list;
   switch (transaction.type) {