LOS ANGELES Zac Efron isn’t having the best year. The actor who was recently in rehab for a drub problem broke his jaw on Sunday at his Los Angeles area home. Efron, who slipped on a puddle, has his mouth wired shut and received stitches from a gash he suffered. Plans to promote upcoming film That Awkward Moment have been postponed. Efron was recently urged to rehabilitate his career — after four bombs at the box office. Efron, 26, once starred in movies like Hairspray, 17 Again, Charlie St. Cloud and The Lucky One that raked in millions upon millions at the box office.–SY