Stephen Fry feels “protective” of Lena Dunham. The 66-year-old actor stars alongside Lena, 38, in ‘Treasure’ – a new film that centres on an American journalist who travels to Poland with her father to visit his childhood landmarks – and Stephen has admitted to relishing the experience of working with the ‘Girls’ creator. Asked if he was aware of her previous work, Stephen told The Observer newspaper: “Yes, because of ‘Girls’, which I think is such an amazing series to have created and performed in. We understood each other so instantly. “She called me ‘daddy’ a lot of the time, and although I…