Core/Loot: Added loot slot check to Loot::LootItemInSlot (client sent-value)

Port From (https://github.com/TrinityCore/TrinityCore/commit/2eea58f26e8fe88f3294dca3d4a38d6a20d68e07)

Source/Game/Entities/Player/Player.cs

@@ -1905,7 +1905,7 @@ namespace Game.Entities
             }
             else if (playerClass == Class.DemonHunter)
                 startLevel = Math.Max(WorldConfig.GetUIntValue(WorldCfg.StartDemonHunterPlayerLevel), startLevel);
-            else if (playerClass == CLASS_EVOKER)
+            else if (playerClass == Class.Evoker)
                 startLevel = Math.Max(WorldConfig.GetUIntValue(WorldCfg.StartEvokerPlayerLevel), startLevel);
 
             if (characterTemplateId.HasValue)

Source/Game/Loot/Loot.cs

@@ -956,10 +956,14 @@ namespace Game.Loots
         {
             return LootItemInSlot(lootSlot, player, out _);
         }
+
         public LootItem LootItemInSlot(uint lootListId, Player player, out NotNormalLootItem ffaItem)
         {
             ffaItem = null;
 
+            if (lootListId >= items.Count)
+                return null;
+
             LootItem item = items[(int)lootListId];
             bool is_looted = item.is_looted;