message: fix one token widget build
diff: @@ -29,7 +29,7 @@ const repo = utils.createRepo()
  utils.exitListener()
  if (config && config.isWidget) {
  - const multiTokenNames = Object.keys(window.widgetERC20Tokens)
  + const multiTokenNames = (window.widgetERC20Tokens) ? Object.keys(window.widgetERC20Tokens) : []
  if (multiTokenNames.length) {
  // Multi token mode
  multiTokenNames.forEach((key) => {
  