default balance to undefined, fixes #534

ui/js/component/header/index.js

@@ -16,7 +16,7 @@ import Header from "./view";
 const select = state => ({
   isBackDisabled: selectIsBackDisabled(state),
   isForwardDisabled: selectIsForwardDisabled(state),
-  balance: formatCredits(selectBalance(state), 1),
+  balance: formatCredits(selectBalance(state) || 0, 1),
   publish: __("Publish"),
 });
 

ui/js/modal/modalCreditIntro/view.jsx

@@ -2,7 +2,6 @@ import React from "react";
 import { Modal } from "modal/modal";
 import { CreditAmount, CurrencySymbol } from "component/common";
 import Link from "component/link/index";
-import { formatCredits } from "util/formatCredits";
 
 const ModalCreditIntro = props => {
   const { closeModal, currentBalance, totalRewardValue, verifyAccount } = props;

ui/js/reducers/wallet.js

@@ -8,7 +8,7 @@ const buildDraftTransaction = () => ({
 });
 
 const defaultState = {
-  balance: 0,
+  balance: undefined,
   blocks: {},
   transactions: [],
   fetchingTransactions: false,

ui/js/selectors/wallet.js

@@ -4,7 +4,7 @@ export const _selectState = state => state.wallet || {};
 
 export const selectBalance = createSelector(
   _selectState,
-  state => state.balance || 0
+  state => state.balance
 );
 
 export const selectTransactions = createSelector(