REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1248 Within function UdfOpen(): This commit will use debug messages instead of using ASSERT when an error occurs after calling GetFileSize(). Cc: Ruiyu Ni <ruiyu.ni@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Paulo Alcantara <palcantara@suse.de> Reviewed-by: Star Zeng <star.zeng@intel.com>