bitovi/canjs — pull request #1323 by gsmeets (2014-11-10 15:47:11+00:00)
Title: property for which no validations are defined throws an exception

I created a small fix for the edge case when you explicitly test a property for errors when there are no validations defined in the can.Map.

attrs would be filled with your one property that is checked, but validations would be undefined, causing an issue.