Refactor > Rename does not work correctly for private constructor properties

Hi,

**VS**: 2013 Update 4 RC.
**TS**: 1.3

In the code below:

``` TypeScript
class Foo {

    constructor(
        private bar: string
        ) { }

    getBar() {
        return this.bar;
    }
}
```

right-clicking on the constructor `bar` and renaming does not rename `this.bar` in `getBar`.

If `bar` is public or defined outside of the constructor, then the rename works correctly.
