Exiles Reach: trample mows the undead down (kill + despawn)

The trample only dealt 120 damage, leaving healthier zombies/ogres alive
and visible. Kill and despawn each hostile target so the trampled army
actually disappears.

src/server/scripts/ExilesReach/exiles_reach_darkmaul_plains.cpp

@@ -1024,7 +1024,6 @@ public:
                     source = boar;
 
             float radius = GetEffectInfo().CalcRadius(source).Max;
-            int32 damage = GetEffectValue();
 
             std::list<Creature*> targets;
             Trinity::AnyUnitInObjectRangeCheck u_check(source, radius);
@@ -1035,7 +1034,11 @@ public:
             {
                 if (!source->IsValidAttackTarget(target))
                     continue;
-                Unit::DealDamage(source, target, uint32(damage), nullptr, DIRECT_DAMAGE, SPELL_SCHOOL_MASK_NORMAL);
+                // Mow the undead down: kill and despawn them so the trampled
+                // army actually disappears (damage alone left the healthier
+                // mobs alive and visible).
+                Unit::Kill(source, target);
+                target->DespawnOrUnsummon();
             }
         }