Fixing some runtimes and issues.

code/modules/clothing/head/helmet.dm

@@ -273,7 +273,7 @@
 
 //LightToggle
 
-/obj/item/clothing/head/helment/ComponentInitialize()
+/obj/item/clothing/head/helmet/ComponentInitialize()
 	. = ..()
 	AddElement(/datum/element/update_icon_updates_onmob)
 

code/modules/clothing/spacesuits/hardsuit.dm

@@ -41,7 +41,7 @@
 
 /obj/item/clothing/head/helmet/space/hardsuit/dropped(mob/user)
 	..()
-	if(suit)
+	if(suit && !ismob(loc)) //equipped() will handle mob cases, so it doesn't disengage twice.
 		suit.RemoveHelmet()
 		soundloop.stop(user)
 

code/modules/mob/living/living_defense.dm

@@ -340,7 +340,7 @@
 		if(M.is_muzzled() || (M.wear_mask && M.wear_mask.flags_cover & MASKCOVERSMOUTH))
 			to_chat(M, "<span class='warning'>You can't bite with your mouth covered!</span>")
 			return FALSE
-		if(run_block(M, 0, "the [M.name]", ATTACK_TYPE_MELEE | ATTACK_TYPE_UNARMED, M, check_zone(M.zone_selected)) & BLOCK_SUCCESS)
+		if(run_block(M, 0, "the [M.name]", ATTACK_TYPE_MELEE | ATTACK_TYPE_UNARMED, 0, M, check_zone(M.zone_selected)) & BLOCK_SUCCESS)
 			return FALSE
 		M.do_attack_animation(src, ATTACK_EFFECT_BITE)
 		if (prob(75))

code/modules/research/xenobiology/crossbreeding/stabilized.dm

@@ -158,7 +158,7 @@ Stabilized extracts:
 
 /obj/item/slimecross/stabilized/rainbow/attackby(obj/item/O, mob/user)
 	var/obj/item/slimecross/regenerative/regen = O
-	if(istype(O) && !regencore)
+	if(istype(regen) && !regencore)
 		to_chat(user, "<span class='notice'>You place the [O] in the [src], prepping the extract for automatic application!</span>")
 		regencore = regen
 		regen.forceMove(src)