Examine now shows if a head has had it's organs removed (#18598)

* wow look at this head i found in maints!

* i dont steal code I swear

* oops totally meant to fix this in the last commit

code/modules/surgery/organs/organ_external.dm

@@ -575,7 +575,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 /obj/item/organ/external/attackby(obj/item/I, mob/user, params)
 	if(I.sharp)
 		add_fingerprint(user)
-		if(!contents.len)
+		if(!length(contents))
 			to_chat(user, "<span class='warning'>There is nothing left inside [src]!</span>")
 			return
 		playsound(loc, 'sound/weapons/slice.ogg', 50, 1, -1)

code/modules/surgery/organs/subtypes/standard.dm

@@ -228,6 +228,11 @@
 	var/sec_facial_colour = "#000000"
 	var/f_style = "Shaved"
 
+/obj/item/organ/external/head/examine(mob/user)
+	. = ..()
+	if(!length(contents))
+		. += "<span class='warning'>There is nothing left inside!</span>"
+
 /obj/item/organ/external/head/remove()
 	if(owner)
 		if(!istype(dna))