Honestly? That looks like a very minor seep, more than likely they'll just warranty the condenser line for some warranty time (you probably could just go as far as a new o-ring, but warranty would give you more shit for that than ordering a new line). Compressor would only be something they'd consider if the system had an internal failure and then we're following a TSB to check which ports have debris/junk in them to determine what chart of replacement parts we're using.
I would not have cleaned it off [MENTION=701633]supermark[/MENTION] because it makes it mildly more annoying to warranty. But you did take a picture so just show them that and where you cleaned it off, a bit more of a hassle if warranty wants to pick a fight; but this is hardly the first seeping A/C line I've seen. That should easily be covered under 3yr/36k bumper to bumper and they'll evac and recharge it for you if it's actually low.