Minor changes

code/datums/spells/horsemask.dm

@@ -22,6 +22,9 @@
 		return
 
 	var/mob/living/carbon/target = targets[1]
+	
+	if(!target)
+		return
 
 	if(!(target.type in compatible_mobs))
 		user << "<span class='notice'>It'd be stupid to curse [target] with a horse's head!</span>"

code/datums/spells/mind_transfer.dm

@@ -16,6 +16,7 @@
 	var/msg_wait = 500 //how long in deciseconds it waits before telling that body doesn't feel right or mind swap robbed of a spell
 	var/paralysis_amount_caster = 20 //how much the caster is paralysed for after the spell
 	var/paralysis_amount_victim = 20 //how much the victim is paralysed for after the spell
+	icon_power_button = "spell_mind"
 
 /*
 Urist: I don't feel like figuring out how you store object spells so I'm leaving this for you to do.