Select component with no options throws error when life cycle enters componentWillUnmount

### Description

Select component with no select options throws error when calling `removeResizeListener` in `ComponentWillUnmount`.

I noticed that `addResizeListener(this.refs.root, this.resetInputWidth);` has been moved to `ComponentDidUpdate` in recent code commits(it was written in `componentDidMount` before). If users do nothing , `componentDidUpdate` will be never called, i.e. ` addResizeListener(this.refs.root, this.resetInputWidth);` will not be called, which results in throwing error if Select with empty children option components are unmounted.

Here are the new source codes:

Select.jsx
```
componentDidUpdate() {
this.state.inputWidth = this.reference.getBoundingClientRect().width;
addResizeListener(this.refs.root, this.resetInputWidth);
}

componentWillUnmount() {
removeResizeListener(this.refs.root, this.resetInputWidth);
}
```

### Solution

If select has no options, it is required to push an empty object into select options array, but I don't think it is the best practice for component usage