React 16.0.0 with SSR & [lazysizes](https://github.com/aFarkas/lazysizes) 4.0.1.

Trying to use the ["the noscript pattern"](https://github.com/aFarkas/lazysizes#the-noscript-pattern) to lazy load images with [lazysizes](https://github.com/aFarkas/lazysizes) but I'm seeing this:

> Warning: Expected server HTML to contain a matching &lt;img&gt; in &lt;noscript&gt;.

Image component render method:

```js
render () {
    const { cdn, url, width, height } = this.props

    if (!url) return null

    const noScriptImgProps = {
      src: `${cdn}${url}`,
      className: classNames('product-image'),
      width,
      height
    }

    const imgProps = {
      'data-src': `${cdn}${url}`,
      className: classNames('product-image', 'lazyload'),
      width,
      height
    }

    return (
      <span>
        <noscript>
          <img {...noScriptImgProps} />
        </noscript>
        <img {...imgProps} />
      </span>
    )
  }
```

Does React have an issue with `noscript` tags..?


async render => {
          class UndefinedComponent extends React.Component {
            render() {
              return undefined;
            }
          }
          await render(<UndefinedComponent />, 1);
        },
        'UndefinedComponent(...): Nothing was returned from render. ' +
          'This usually means a return statement is missing. Or, to ' +
          'render nothing, return null.',
      );
      itThrowsWhenRendering(
        'a function returning an object',
        async render => {
          const ObjectComponent = () => ({x: 123});
          await render(<ObjectComponent />, 1);
        },
        'Objects are not valid as a React child (found: object with keys {x}).' +
          (__DEV__
            ? ' If you meant to render a collection of children, use ' +
              'an array instead.'
            : ''),
      );
      itThrowsWhenRendering(
        'a class returning an object',
        async render => {
          class ObjectComponent extends React.Component {
            render() {
              return {x: 123};