ncbo/goo — pull request #25 by palexander (2012-12-04 00:35:45+00:00)
Title: Return since we know ew didn't validate and there's no array

If you define a unique but leave the value empty and then try to run validation, you get an exception because the validator is expecting an array. One solution is to return when a nil value is found. Not sure if this achieves everything the method should handle, though.