Fixed Runtime in simple_animal_vr.dm,41: Cannot read null.digest_mode

- Caused by using "Toggle Animal's Digestion" verb on non-vore-capable mobs.
- Even better, changed it to not even add those verbs on mobs without vore
- Also remove the path from VV addverb since it is a proc now.

code/modules/admin/view_variables/topic.dm

@@ -366,7 +366,7 @@
 		if(istype(H,/mob/living/silicon/ai))
 			possibleverbs += typesof(/mob/living/silicon/proc,/mob/living/silicon/ai/proc,/mob/living/silicon/ai/verb)
 		if(istype(H,/mob/living/simple_mob))
-			possibleverbs += typesof(/mob/living/simple_mob/proc,/mob/living/simple_mob/verb) //VOREStation edit, Apparently polaris simplemobs have no verbs at all.
+			possibleverbs += typesof(/mob/living/simple_mob/proc)
 		possibleverbs -= H.verbs
 		possibleverbs += "Cancel" 								// ...And one for the bottom
 

code/modules/mob/living/simple_mob/simple_mob_vr.dm

@@ -198,6 +198,10 @@
 	if(LAZYLEN(vore_organs))
 		return
 
+	// Since they have bellies, add verbs to toggle settings on them.
+	verbs |= /mob/living/simple_mob/proc/toggle_digestion
+	verbs |= /mob/living/simple_mob/proc/toggle_fancygurgle
+
 	//A much more detailed version of the default /living implementation
 	var/obj/belly/B = new /obj/belly(src)
 	vore_selected = B

code/modules/vore/eating/simple_animal_vr.dm

@@ -24,9 +24,9 @@
 
 //
 // Simple proc for animals to have their digestion toggled on/off externally
+// Added as a verb in /mob/living/simple_mob/init_vore() if vore is enabled for this mob.
 //
-
-/mob/living/simple_mob/verb/toggle_digestion()
+/mob/living/simple_mob/proc/toggle_digestion()
 	set name = "Toggle Animal's Digestion"
 	set desc = "Enables digestion on this mob for 20 minutes."
 	set category = "OOC"
@@ -35,6 +35,9 @@
 	var/mob/living/carbon/human/user = usr
 	if(!istype(user) || user.stat) return
 
+	if(!vore_selected)
+		to_chat(user, "<span class='warning'>[src] isn't planning on eating anything much less digesting it.</span>")
+		return
 	if(ai_holder.retaliate || (ai_holder.hostile && faction != user.faction))
 		to_chat(user, "<span class='warning'>This predator isn't friendly, and doesn't give a shit about your opinions of it digesting you.</span>")
 		return
@@ -49,7 +52,8 @@
 		if(confirm == "Disable")
 			vore_selected.digest_mode = DM_HOLD
 
-/mob/living/simple_mob/verb/toggle_fancygurgle()
+// Added as a verb in /mob/living/simple_mob/init_vore() if vore is enabled for this mob.
+/mob/living/simple_mob/proc/toggle_fancygurgle()
 	set name = "Toggle Animal's Gurgle sounds"
 	set desc = "Switches between Fancy and Classic sounds on this mob."
 	set category = "OOC"
@@ -57,6 +61,9 @@
 
 	var/mob/living/user = usr	//I mean, At least ghosts won't use it.
 	if(!istype(user) || user.stat) return
+	if(!vore_selected)
+		to_chat(user, "<span class='warning'>[src] isn't vore capable.</span>")
+		return
 
 	vore_selected.fancy_vore = !vore_selected.fancy_vore
 	to_chat(user, "[src] is now using [vore_selected.fancy_vore ? "Fancy" : "Classic"] vore sounds.")