fix freeze on anims that were both looping and ending at time=0.

This fix the reported animation freeze, if more are found, please report to me

src/animated.i

@@ -128,7 +128,7 @@ void animated<T,T_void_value>::update_last_draw_time()
 	}
 	if(cycles_) {
 		while(get_animation_time() > get_end_time()){  // cut extra time
-			start_tick_ += static_cast<int>(get_end_time()/acceleration_);
+			start_tick_ += static_cast<int>(get_animation_duration()/acceleration_);
 			current_frame_key_ = 0;
 		}
 	}