Minor Initialize fixes (#3138)

changes:

Fixed some missing hints for gibspawners and spiders.
Removed all duplicated lattices/catwalks from the map.

code/game/objects/effects/gibs.dm

@@ -11,7 +11,7 @@
 	var/bloodcolor //Used for gibbed humans.
 
 	Initialize(mapload, list/viruses, datum/dna/MobDNA, fleshcolor, bloodcolor)
-		..()
+		. = ..()
 
 		if(fleshcolor) src.fleshcolor = fleshcolor
 		if(bloodcolor) src.bloodcolor = bloodcolor

code/modules/mob/living/simple_animal/hostile/giant_spider.dm

@@ -66,7 +66,7 @@
 
 /mob/living/simple_animal/hostile/giant_spider/Initialize(mapload, atom/parent)
 	get_light_and_color(parent)
-	..()
+	. = ..()
 
 /mob/living/simple_animal/hostile/giant_spider/AttackingTarget()
 	. = ..()