SecurityPkg : Fix Rsa2048Sha256GuidedSectionExtractLib issue

This issue causes section extraction overrun and possible hang due to bad output size calculation.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Cohen, Eugene" <eugene@hp.com>
Reviewed-by: "Zhang, Chao B" <chao.b.zhang@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18625 6f19259b-4bc3-4df7-8a09-765794883524
2 files changed