It's variety dependent, keep going and you may notice nothing or you'll see hermies and maybe a plant that wants to get back into veg growth. Keep your eyes peeled for those curly leaves that r a sign of re-veg or look for any new leaf growth out of colas.
Since the flowering hormone builds up at night in response to the length of uninterrupted darkenss, I think you're most likely to be okay. It is strain dependent, but I think this is probably less of an error than accidentally flipping the lights on 5 hours into a dark cycle...