message: add offer didnt update exchange rate and balance after switch currency
diff: @@ -113,7 +113,7 @@ export default class AddOffer extends Component {
  await this.checkBalance(sellCurrency)
  - await this.updateExchangeRate(sellCurrency, buyCurrency)
  + await this.updateExchangeRate(sellCurrency, value)
  const { exchangeRate } = this.state
  sellAmount = new BigNumber(String(buyAmount) || 0).multipliedBy(exchangeRate)
  @@ -136,9 +136,9 @@ export default class AddOffer extends Component {
  this.checkPair(value)
  - await this.checkBalance(sellCurrency)
  + await this.checkBalance(value)
  - await this.updateExchangeRate(sellCurrency, buyCurrency)
  + await this.updateExchangeRate(value, buyCurrency)
  const { exchangeRate } = this.state
  buyAmount = new BigNumber(String(sellAmount) || 0).multipliedBy(exchangeRate)
  