You have done nothing wrong (except maybe cook your wine). Sometimes the corker on the line doesn't always get the cork fully into the bottle and might make someone think it has been exposed to heat. Can you spin the foil on the bottle? If so, then you may not have had any damage. If not, then I would be willing to say it has a good potential for heat damage. If you are worried, drink up and don't hold it any longer. Report back and let us know your thoughts.