REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1706 Issues were: 1. copy_paste_error: PeOptHdr vs PePlusOptHdr. 2. invalid_operation: Invalid operation on null-like value "roffset". 3. invalid_operation: Invalid operation on null-like value "rsize". Fixed them by initializing roffset and rsize as PE32 image type and overriding them when PE32+ header found. Test: Compared script output before and after this patch and the result is identical. Cc: Maurice Ma <maurice.ma@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Signed-off-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>