fix 'Uncaught TypeError: undefined is not a function', spacing in coffee...

...script Ember.ListView.extend function

* I was seeing this error `Uncaught TypeError: undefined is not a function `

See the difference in compiled JS:

before
```javascript
Ember.ListView.extend({
  style: Ember.computed(function() {
    var height;
    height = Math.min(this.get('height'), this.get('totalHeight'));
    return "height: " + height + "px";
  })
}.property('height', 'totalHeight'))
```

after:
```javascript
Ember.ListView.extend({
  style: Ember.computed(function() {
    var height;
    height = Math.min(this.get('height'), this.get('totalHeight'));
    return "height: " + height + "px";
  })
}).property('height', 'totalHeight')
```