Hello,

After updating to React 15.0.1, we are getting the following error:

```
Uncaught TypeError: Cannot read property 'addEventListener' of null
```

![image](https://cloud.githubusercontent.com/assets/4996164/14602577/5bb4e9f2-0571-11e6-9aa1-98de49f50d76.png)

prevParentElement,
    nextParentElement,
    prevUnmaskedContext,
    nextUnmaskedContext
  ) {
    var inst = this._instance;
    var willReceive = false;
    var nextContext;
    var nextProps;
    
    if (this._context === nextUnmaskedContext) {
      nextContext = inst.context;
    } else {
      nextContext = this._processContext(nextUnmaskedContext);
      willReceive = true;
    }
    
    if (prevParentElement === nextParentElement) {
      
      
      nextProps = nextParentElement.props;
    } else {
      nextProps = this._processProps(nextParentElement.props);
      willReceive = true;
    }
    
    
    
    if (willReceive && inst.componentWillReceiveProps) {
      if (__DEV__) {