Robert De Niro has become a father to his seventh child at the age of 79.   The American actor revealed he had just welcomed a new baby in an interview with ET Canada.   The Godfather actor was asked by a reporter from ET Canada what it was like to be a father of six children. The actor corrected her, replying: “Seven, actually.” “I just had a baby,” he added. “I mean, there’s no way around it with kids. …