The rules were changed and as long as you aren't interferring with the goalie, the goal won't be taken away. Kozek wasn't even interfering with the goalies vision as the shot came from the other way.
I'd have to check, but I don't think that even a whistle would have been called for as he wasn't camped out there. Generally you only see the whistle (and face off out of the zone) when someone's standing in the crease.