Warren Buffett came to the defense of Goldman Sachs today at Berkshire Hathaway Inc.’s annual shareholders meeting, saying the firm hadn’t done anything wrong and wasn’t responsible for the money its clients lost. The Oracle of Omaha also stuck up for Goldman CEO Lloyd Blankfein and said that if he were allowed to choose Blankfein’s successor, he’d go with the CEO’s twin brother, if he had one. And that $5 billion investment Buffett made in Goldman back in 2008? He “loves” it. He also loves eating ice cream from Dairy Queen, which Berkshire Hathaway owns.