bfb8c64cbf
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1279 The content within 'File' is the output data for ResolveSymlink(). This commit will add checks to ensure the content in 'File' is valid. Otherwise, possible null pointer dereference issue will occur during the subsequent usage of the data returned by ResolveSymlink(). 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> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>