b390737ad0
Commit 2cb8743524 eliminates possible NULL
pointer dereference in GenFfs tool source codes. However, it doesn't
correctly handle the case when the input file is of size 0. This will lead
to possible build issues.
This commits refine the logic to handle the above case.
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>