How many horcrux are destroyed in Deathly Hallows part 2 movie?

Well seeing as too how Tom Riddle's diary, Maevolo Gaunt's ring, and Salazar Slytherin's locket are destroyed in the second book (diary), between the time of the fifth and sixth books (ring), and in the seventh book (locket during the first part). There should be four horcruxes to be destroyed in Harry Potter and the Deathly Hallows part two. those being Helga Hufflepuff's goblet, Rowena Ravenclaw's diadem, Nagini (Voldemorts pet snake), and of course Harry Potter himself.