For a barbecue lover, it might be the saddest sight imaginable: “CLOSED” the sign said. “We had a fire. We will reopen as soon as we can. - The Franklin Family” The sign, hand printed on butcher paper, was taped to the front door of Franklin Barbecue in Austin. Normally, at about noon on a nice summer Thursday, there could be dozens of people in line, ready to taste the best of Texas smoked meats. The original Franklin Barbecue trailer in 2010. (Photo ©Chris Wilkins/Texas BBQ Posse) But no one was in line during my visit. The joint has been…