Speed up BaseItem deserialization

Emby.Server.Implementations/Data/SqliteItemRepository.cs

@@ -1298,20 +1298,15 @@ namespace Emby.Server.Implementations.Data
 
             if (TypeRequiresDeserialization(type))
             {
-                using (var stream = new MemoryStream(reader[1].ToBlob()))
-                {
-                    stream.Position = 0;
-
                 try
                 {
-                        item = _jsonSerializer.DeserializeFromStream(stream, type) as BaseItem;
+                    item = _jsonSerializer.DeserializeFromString(reader[1].ToString(), type) as BaseItem;
                 }
                 catch (SerializationException ex)
                 {
                     Logger.LogError(ex, "Error deserializing item");
                 }
             }
-            }
 
             if (item == null)
             {