Gives His Grace stamina regeneration

His Grace, the 20TC item, is meant to absorb stun damage. When it feeds on corpses, its hunger increases quickly and steadily, but the current stamina system makes it impossible to actually fight without stamcritting yourself and getting eaten.

This gives regeneration to where you can actually use His Grace in the later stages without suffering from exhaustion.

code/game/objects/items/his_grace.dm

@@ -93,6 +93,7 @@
 				master.remove_status_effect(STATUS_EFFECT_HISGRACE)
 				REMOVE_TRAIT(src, TRAIT_NODROP, HIS_GRACE_TRAIT)
 				master.Knockdown(60)
+				master.adjustStaminaLoss(-5)
 				master.adjustBruteLoss(master.maxHealth)
 				playsound(master, 'sound/effects/splat.ogg', 100, 0)
 			else