[MIRROR] Fixes a firebot runtime (#4652)

Firebots were runtiming due to multiple initializations, so this fixes that
issue by calling a proc to refill the extinguisher rather than going through
the initialize proc to do it.

code/game/objects/items/extinguisher.dm

@@ -41,11 +41,13 @@
 	sprite_name = "miniFE"
 	dog_fashion = null
 
-/obj/item/extinguisher/Initialize()
-	. = ..()
+/obj/item/extinguisher/proc/refill()
 	create_reagents(max_water, AMOUNT_VISIBLE)
 	reagents.add_reagent(chem, max_water)
 
+/obj/item/extinguisher/Initialize()
+	. = ..()
+	refill()
 
 /obj/item/extinguisher/advanced
 	name = "advanced fire extinguisher"

code/modules/mob/living/simple_animal/bot/firebot.dm

@@ -50,7 +50,6 @@
 	internal_ext.safety = FALSE
 	internal_ext.precision = TRUE
 	internal_ext.max_water = INFINITY
-	internal_ext.Initialize()
 
 /mob/living/simple_animal/bot/firebot/turn_on()
 	. = ..()
@@ -109,10 +108,13 @@
 		extinguish_fires = FALSE
 		extinguish_people = TRUE
 
+		internal_ext = new /obj/item/extinguisher(src)
 		internal_ext.chem = "clf3" //Refill the internal extinguisher with liquid fire
 		internal_ext.power = 3
+		internal_ext.safety = FALSE
 		internal_ext.precision = FALSE
-		internal_ext.Initialize()
+		internal_ext.max_water = INFINITY
+		internal_ext.refill()
 
 /mob/living/simple_animal/bot/firebot/Topic(href, href_list)
 	if(..())