fix syntax error in latest pull request (#227)
fix syntax error in latest pull request (#227)

georgepar/rosdep,sorki/rosdep,georgepar/rosdep,wkentaro/rosdep,aymanim/rosdep,ros-infrastructure/rosdep,spaghetti-/rosdep,ros-infrastructure/rosdep,wkentaro/rosdep,sorki/rosdep,spaghetti-/rosdep,alessandro-aglietti/rosdep,alessandro-aglietti/rosdep,aymanim/rosdep,allenh1/rosdep,allenh1/rosdep