Fixed IDataRecordExtensions.GetAsBytes() to handle nulls.
Fixed IDataRecordExtensions.GetAsBytes() to handle nulls.

git-svn-id: 1800f71f313d917366f95485fa960eed04b40598@1086 33146b6e-df29-0410-a1ca-39be37fb9416

koush/dblinq,koush/dblinq