Fix few crashes while loading server.

Source/Game/DataStorage/AreaTriggerDataStorage.cs

@@ -308,7 +308,7 @@ namespace Game.DataStorage
                     AreaTriggerSpawn spawn = new AreaTriggerSpawn();
                     spawn.SpawnId = spawnId;
                     spawn.Id = areaTriggerId;
-                    spawn.Location.WorldRelocate(location);
+                    spawn.Location = new WorldLocation(location);
 
                     spawn.PhaseUseFlags = templates.Read<byte>(8);
                     spawn.PhaseId = templates.Read<uint>(9);

Source/Game/Entities/AreaTrigger/AreaTriggerTemplate.cs

@@ -199,7 +199,7 @@ namespace Game.Entities
 
         public override bool Equals(object obj)
         {
-            return Equals((AreaTriggerId)obj);
+            return this == (AreaTriggerId)obj;
         }
 
         public static bool operator ==(AreaTriggerId left, AreaTriggerId right)

Source/Game/Maps/ObjectGridLoader.cs

@@ -80,7 +80,7 @@ namespace Game.Maps
         {
             CellCoord cellCoord = i_cell.GetCellCoord();
             SortedSet<ulong> areaTriggers = Global.AreaTriggerDataStorage.GetAreaTriggersForMapAndCell(i_map.GetId(), cellCoord.GetId());
-            if (areaTriggers.Empty())
+            if (areaTriggers == null)
                 return;
 
             LoadHelper<AreaTrigger>(areaTriggers, cellCoord, ref i_areaTriggers, i_map);

Source/Game/Networking/Packets/BattleGroundPackets.cs

@@ -515,7 +515,7 @@ namespace Game.Networking.Packets
     }
 
     //Structs
-    class BracketInfo
+    struct BracketInfo
     {
         public int PersonalRating;
         public int Ranking;