No worries at all.
The airport doesn't care ... you could easily have bought 2 separate tickets with a full day layover.
The airlines won't care either ... as long as you get back in time, of course.
You'll need to go back through security when you re-enter the terminal, but that's about it.
Last edited by canopus27; Feb 17, 2017 at 1:39 pm
Reason: fixed tupo