Core/PacketIO: Handle CMSG_REQUEST_PET_INFO for more cases

Port From (https://github.com/TrinityCore/TrinityCore/commit/25e68fc5c20c2a331711ef74dbc6686d08e256ec)

Source/Game/Handlers/PetHandler.cs

@@ -758,7 +758,27 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.RequestPetInfo)]
         void HandleRequestPetInfo(RequestPetInfo requestPetInfo)
         {
-            GetPlayer().PetSpellInitialize();
+            // Handle the packet CMSG_REQUEST_PET_INFO - sent when player does ingame /reload command
+
+            // Packet sent when player has a pet
+            if (_player.GetPet())
+                _player.PetSpellInitialize();
+            else
+            {
+                Unit charm = _player.GetCharmed();
+                if (charm != null)
+                {
+                    // Packet sent when player has a possessed unit
+                    if (charm.HasUnitState(UnitState.Possessed))
+                        _player.PossessSpellInitialize();
+                    // Packet sent when player controlling a vehicle
+                    else if (charm.HasUnitFlag(UnitFlags.PlayerControlled) && charm.HasUnitFlag(UnitFlags.Possessed))
+                        _player.VehicleSpellInitialize();
+                    // Packet sent when player has a charmed unit
+                    else
+                        _player.CharmSpellInitialize();
+                }
+            }
         }
     }
 }