Angular Select select as label for value in array syntax broken for nullable

[basarat]

select as label for value in array shows an empty box if we drive the nullable from the model

For example for model

$scope.colors = [
      {name:'nothing', shade:null},
      {name:'red', shade:'dark'}
    ];

compare good version (color.name for color in colors)

with bad version (color.shade as color.name for color in colors)

Sample : http://plnkr.co/edit/MLgOTj9tjd9HF56Jm5RU?p=preview

[petebacondarwin]

This is fixed by #10639. See http://plnkr.co/edit/pf0EIrZbb9qXa7Oqy6kc?p=preview