Moves some list initializations to New

Fixes missing ..() calls in New()

code/modules/vehicles/atv.dm

@@ -18,7 +18,7 @@
 
 
 obj/vehicle/atv/post_buckle_mob(mob/living/M)
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		overlays += atvcover
 	else
 		overlays -= atvcover

code/modules/vehicles/pimpin_ride.dm

@@ -10,7 +10,7 @@
 
 /obj/vehicle/janicart/handle_vehicle_offsets()
 	..()
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		for(var/m in buckled_mobs)
 			var/mob/living/buckled_mob = m
 			switch(buckled_mob.dir)

code/modules/vehicles/scooter.dm

@@ -21,7 +21,7 @@
 
 /obj/vehicle/scooter/handle_vehicle_offsets()
 	..()
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		for(var/m in buckled_mobs)
 			var/mob/living/buckled_mob = m
 			switch(buckled_mob.dir)
@@ -46,14 +46,14 @@
 	density = 0
 
 /obj/vehicle/scooter/skateboard/post_buckle_mob(mob/living/M)//allows skateboards to be non-dense but still allows 2 skateboarders to collide with each other
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		density = 1
 	else
 		density = 0
 
 /obj/vehicle/scooter/skateboard/Bump(atom/A)
 	..()
-	if(A.density && buckled_mobs.len)
+	if(A.density && has_buckled_mobs())
 		var/mob/living/carbon/H = buckled_mobs[1]
 		var/atom/throw_target = get_edge_target_turf(H, pick(cardinal))
 		unbuckle_mob(H)

code/modules/vehicles/speedbike.dm

@@ -26,7 +26,7 @@
 	dir = move_dir
 
 /obj/vehicle/space/speedbike/Move(newloc,move_dir)
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		PoolOrNew(/obj/effect/overlay/temp/speedbike_trail,list(loc,move_dir))
 	. = ..()
 
@@ -40,7 +40,7 @@
 			pixel_y = 0
 
 /obj/vehicle/space/speedbike/handle_vehicle_offsets()
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		for(var/m in buckled_mobs)
 			var/mob/living/buckled_mob = m
 			buckled_mob.dir = dir

code/modules/vehicles/vehicle.dm

@@ -36,7 +36,7 @@
 //if they differ between directions, otherwise use the
 //generic variables
 /obj/vehicle/proc/handle_vehicle_offsets()
-	if(buckled_mobs.len)
+	if(has_buckled_mobs())
 		for(var/m in buckled_mobs)
 			var/mob/living/buckled_mob = m
 			buckled_mob.dir = dir
@@ -123,7 +123,7 @@
 /obj/vehicle/Bump(atom/movable/M)
 	. = ..()
 	if(auto_door_open)
-		if(istype(M, /obj/machinery/door) && buckled_mobs.len)
+		if(istype(M, /obj/machinery/door) && has_buckled_mobs())
 			for(var/m in buckled_mobs)
 				M.Bumped(m)