Merge pull request #13623 from trololiver112/Vision-fix

Fixes Shadowling darksight not giving night vision when toggled

code/modules/surgery/other.dm

@@ -327,7 +327,7 @@
 	user.visible_message("[user] shines light onto the tumor in [target]'s [E]!", "<span class='notice'>You cleanse the contamination from [target]'s brain!</span>")
 	if(target.vision_type) //Turns off their darksight if it's still active.
 		to_chat(target, "<span class='boldannounce'>Your eyes are suddenly wrought with immense pain as your darksight is forcibly dismissed!</span>")
-		target.vision_type = null
+		target.set_sight(null)
 	SSticker.mode.remove_thrall(target.mind, 0)
 	target.visible_message("<span class='warning'>A strange black mass falls from [target]'s [E]!</span>")
 	var/obj/item/organ/thing = new /obj/item/organ/internal/shadowtumor(get_turf(target))