Core: Corrected NULL usage, it should only be used with pointers, not integers

src/server/scripts/Kalimdor/BlackfathomDeeps/blackfathom_deeps.cpp

@@ -233,7 +233,7 @@ public:
         {
             DoScriptText(SAY_MORRIDUNE_1,pCreature);
             me->RemoveFlag(UNIT_NPC_FLAGS, UNIT_NPC_FLAG_GOSSIP);
-            Start(false,false,NULL);
+            Start(false,false,0);
         }
 
         void WaypointReached(uint32 uiPoint)

src/server/scripts/Kalimdor/BlackfathomDeeps/instance_blackfathom_deeps.cpp

@@ -135,7 +135,7 @@ public:
                     break;
                 case GO_AKU_MAI_DOOR:
                     if (m_auiEncounter[2] == DONE)
-                        HandleGameObject(NULL,true,go);
+                        HandleGameObject(0,true,go);
                     m_uiMainDoorGUID = go->GetGUID();
                     break;
             }