Refactor shadowling veil extinguish proc

code/game/objects/items/devices/flashlight.dm

@@ -83,6 +83,11 @@
 	else
 		return ..()
 
+/obj/item/flashlight/extinguish_light()
+	if(on)
+		on = 0
+		update_brightness()
+
 /obj/item/flashlight/pen
 	name = "penlight"
 	desc = "A pen-sized light, used by medical staff."
@@ -211,6 +216,9 @@ obj/item/flashlight/lamp/bananalamp
 		src.damtype = "fire"
 		processing_objects += src
 
+/obj/item/flashlight/flare/extinguish_light()
+	visible_message("<span class='danger'>[src] dims slightly before scattering the shadows around it.</span>")
+	
 /obj/item/flashlight/flare/torch
 	name = "torch"
 	desc = "A torch fashioned from some leaves and a log."
@@ -242,6 +250,9 @@ obj/item/flashlight/lamp/bananalamp
 /obj/item/flashlight/slime/attack_self(mob/user)
 	return //Bio-luminescence does not toggle.
 
+/obj/item/flashlight/slime/extinguish_light()
+	visible_message("<span class='danger'>[src] dims slightly before scattering the shadows around it.</span>")
+
 /obj/item/flashlight/emp
 	origin_tech = "magnets=3;syndicate=1"
 
@@ -299,4 +310,4 @@ obj/item/flashlight/lamp/bananalamp
 	anchored = TRUE
 	var/range = null
 	unacidable = TRUE
-	burn_state = LAVA_PROOF
+	burn_state = LAVA_PROOF