NEW YORK — A man in Buffalo has sustained severe frostbite but is alive thanks to multiple good Samaritans who rescued him from the cold as the city was hit with a deadly winter storm over the Christmas weekend. Now recovering in the ICU from fourth-degree frostbite, 64-year-old Joe White was saved on Christmas Eve Saturday by Sha’Kyra Aughtry and her boyfriend, Trent, after they heard him calling for help, according to a Facebook livestream Aughtry did, CNN reports. Though she doesn’t have a background in medical care, necessity really is the mother of invention. Aughtry told those watching s…