message: addOffer: fix exchange rate updating
diff: @@ -74,7 +74,7 @@ export default class AddOffer extends Component {
  actions.pairs.selectPair(sellCurrency)
  this.checkBalance(sellCurrency)
  - this.updateExchangeRate(sellCurrency)
  + this.updateExchangeRate(sellCurrency, buyCurrency)
  }
  checkBalance = async (sellCurrency) => {
  