"if mis not None:" => "if m is not None:"
Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>