Fix compilation issue under 5.3
Fix compilation issue under 5.3

pierregoudjo/uprofiler,omeripek/uprofiler,FriendsOfPHP/uprofiler,omeripek/uprofiler,FriendsOfPHP/uprofiler,FriendsOfPHP/uprofiler,pierregoudjo/uprofiler,pierregoudjo/uprofiler,omeripek/uprofiler