IntelliSense/navigation for private class member crashes VS 2015

To reproduce, create an empty typescript project, add 2 typescript files.

In file1.ts add this:

```
class C {
    private v = 10;
}
```

In file2.ts add this:

```
var g = new C().v;
```

Put caret after the dot `.` before `v`. VS 2015 crashes immediately. (If not, try to navigate to declaration of `v`.)
