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)

initialize: function() {
    this.callbackQueue.reset();
  },
  close: function() {
    this.callbackQueue.notifyAll();
  },
};
var TRANSACTION_WRAPPERS = [NESTED_UPDATES, UPDATE_QUEUEING];
function ReactUpdatesFlushTransaction() {
  this.reinitializeTransaction();
  this.dirtyComponentsLength = null;
  this.callbackQueue = CallbackQueue.getPooled();
  this.reconcileTransaction = ReactUpdates.ReactReconcileTransaction.getPooled(
     true
  );
}
Object.assign(
  ReactUpdatesFlushTransaction.prototype,
  Transaction.Mixin,
  {
    getTransactionWrappers: function() {
      return TRANSACTION_WRAPPERS;
    },
    destructor: function() {
      this.dirtyComponentsLength = null;
      CallbackQueue.release(this.callbackQueue);
      this.callbackQueue = null;
      ReactUpdates.ReactReconcileTransaction.release(this.reconcileTransaction);
      this.reconcileTransaction = null;
    },