The handling of a `PolicyDelegateCollection` should fail fast when the collection was obtained from a `PolicyCollection` and the delegate is null.

[kolan]

For example, this test for handling Action failed, but it should be green:

[Test]
public void Should_PolicyDelegateCollection_From_PolicyCollection_Handling_FailFast_For_Null_Action()
{
	var polCollection = PolicyCollection.Create()
						.WithRetry(1)
						.WithRetry(1);
	Action act = null;
	var result = polCollection.HandleDelegate(act);
	Assert.AreEqual(0, result.Count());
}