Scripts/Icecrown Citadel: Fixed crashes on despawning abominations during Professor Putricide's phase transition

src/server/scripts/Northrend/IcecrownCitadel/boss_professor_putricide.cpp

@@ -167,6 +167,33 @@ enum PutricideData
 #define EXPERIMENT_STATE_OOZE   false
 #define EXPERIMENT_STATE_GAS    true
 
+class AbominationDespawner
+{
+    public:
+        explicit AbominationDespawner(Unit* owner) : _owner(owner) { }
+
+        bool operator()(uint64 guid)
+        {
+            if (Unit* summon = ObjectAccessor::GetUnit(*_owner, guid))
+            {
+                if (summon->GetEntry() == NPC_MUTATED_ABOMINATION_10 || summon->GetEntry() == NPC_MUTATED_ABOMINATION_25)
+                {
+                    if (Vehicle* veh = summon->GetVehicleKit())
+                        veh->RemoveAllPassengers(); // also despawns the vehicle
+
+                    return true;
+                }
+
+                return false;
+            }
+
+            return true;
+        }
+
+    private:
+        Unit* _owner;
+};
+
 class boss_professor_putricide : public CreatureScript
 {
     public:
@@ -477,8 +504,7 @@ class boss_professor_putricide : public CreatureScript
                                 SetPhase(PHASE_COMBAT_3);
                                 events.ScheduleEvent(EVENT_MUTATED_PLAGUE, 25000);
                                 events.CancelEvent(EVENT_UNSTABLE_EXPERIMENT);
-                                summons.DespawnEntry(NPC_MUTATED_ABOMINATION_10);
+                                summons.remove_if(AbominationDespawner(me));
-                                summons.DespawnEntry(NPC_MUTATED_ABOMINATION_25);
                                 break;
                             default:
                                 break;