By Matt Hladik Cameron Smith just rolled in his fourth-straight birdie to tie Rory McIlroy for the lead at The Open with five holes to play. The 28-year-old Australian, who finished tied for third at the Masters in April and tied for 13th at the PGA Championship in May, is 18-under right now as he tries to win the first major of his career. If Smith closes it out this afternoon, he will likely celebrate winning the Claret Jug with his rumored girlfriend, Shanel Naoum. The pair are both pretty lowkey on social media, but Naoum was pictured with Smith after he won The Players Championship in Mar…