message: Fix token approve in the Exchange form
diff: @@ -857,7 +857,7 @@ class Exchange extends PureComponent<any, any> {
  }))
  const { coin: haveCurrencyName } = getCoinInfo(haveCurrency)
  - const coinStandard = COIN_DATA[haveCurrencyName].standard.toLowerCase()
  + const coinStandard = COIN_DATA[haveCurrency.toUpperCase()].standard.toLowerCase()
  actions[coinStandard]
  .approve({
  