message: Fix filterOption true bug
  close ant-design/ant-design#5600
diff: @@ -8,14 +8,15 @@ export default {
  if (!input) {
  return true;
  }
  - const filterOption = this.props.filterOption;
  + const { filterOption } = this.props;
  if (!filterOption) {
  return true;
  - }
  - if (child.props.disabled) {
  + } else if (child.props.disabled) {
  return false;
  - }
  + } else if (typeof filterOption === 'function') {
  return filterOption.call(this, input, child);
  + }
  + return true;
  },
  renderFilterOptions(inputValue) {
  return this.renderFilterOptionsFromChildren(this.props.children, true, inputValue);
  