fix(Scripts/ZulGurub): Prevent from summoning multiple Edge of Madnes… (#12331)

...s bosses.

src/server/scripts/EasternKingdoms/ZulGurub/instance_zulgurub.cpp

@@ -82,6 +82,12 @@ public:
                 case NPC_GAHZRANKA:
                     _gahzrankaGUID = creature->GetGUID();
                     break;
+                case NPC_GRILEK:
+                case NPC_HAZZARAH:
+                case NPC_RENATAKI:
+                case NPC_WUSHOOLAY:
+                    _edgeOfMadnessGUID = creature->GetGUID();
+                    break;
                 default:
                     break;
             }
@@ -119,6 +125,8 @@ public:
                     return _goGongOfBethekkGUID;
                 case DATA_HAKKAR:
                     return _hakkarGUID;
+                case DATA_EDGE_OF_MADNESS:
+                    return _edgeOfMadnessGUID;
             }
 
             return ObjectGuid::Empty;
@@ -186,6 +194,7 @@ public:
         ObjectGuid _goGongOfBethekkGUID;
         ObjectGuid _hakkarGUID;
         ObjectGuid _gahzrankaGUID;
+        ObjectGuid _edgeOfMadnessGUID;
     };
 
     InstanceScript* GetInstanceScript(InstanceMap* map) const override
@@ -223,6 +232,14 @@ struct go_brazier_of_madness : public GameObjectAI
             return true;
         }
 
+        if (InstanceScript* instanceScript = me->GetInstanceScript())
+        {
+            if (instanceScript->GetGuidData(DATA_EDGE_OF_MADNESS))
+            {
+                return false;
+            }
+        }
+
         uint32 bossEntry = 0;
         for (uint8 i = 0; i < 4; ++i)
         {