message: Fix <Select> clearable
  closes
  related to
diff: @@ -92,9 +92,7 @@ export default class SelectControl extends React.PureComponent {
  onChange(opt) {
  let optionValue = null;
  - if (!opt) {
  - return;
  - }
  + if (opt) {
  if (this.props.multi) {
  optionValue = [];
  for (const o of opt) {
  @@ -112,6 +110,7 @@ export default class SelectControl extends React.PureComponent {
  } else {
  optionValue = opt[this.props.valueKey];
  }
  + }
  this.props.onChange(optionValue);
  }
  