SPIGOT-2777: Mobs not being angered by snowballs

nms-patches/EntityLiving.patch

@@ -492,7 +492,7 @@
 +
 +            absorptionModifier = (float) -event.getDamage(DamageModifier.ABSORPTION);
 +            this.setAbsorptionHearts(Math.max(this.getAbsorptionHearts() - absorptionModifier, 0.0F));
-+            if (f > 0) {
++            if (f > 0 || !human) {
 +                if (human) {
 +                    // PAIL: Be sure to drag all this code from the EntityHuman subclass each update.
 +                    ((EntityHuman) this).applyExhaustion(damagesource.getExhaustionCost());