Merge pull request #9312 from CornMyCob/headslug-prompt

Adds prompt for headslug

code/game/gamemodes/changeling/powers/headcrab.dm

@@ -6,6 +6,11 @@
 	dna_cost = 1
 	req_human = 1
 
+/obj/effect/proc_holder/changeling/headcrab/try_to_sting(mob/user, mob/target)
+    if(alert("Are you sure you wish to do this? This action cannot be undone.",,"Yes","No")=="No")
+        return
+    ..()
+
 /obj/effect/proc_holder/changeling/headcrab/sting_action(mob/user)
 	var/datum/mind/M = user.mind
 	var/list/organs = user.get_organs_zone("head", 1)
@@ -37,4 +42,4 @@
 			to_chat(crab, "<span class='warning'>You burst out of the remains of your former body in a shower of gore!</span>")
 	user.gib()
 	feedback_add_details("changeling_powers","LR")
-	return 1
+	return 1