Change BuildGuidHob and BuildGuidDataHob to return NULL upon failure.
Guarantee no memory corruption in an out of memory condition even in production builds.

Signed-off-by: niruiyu
Reviewed-by: mdkinney

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11775 6f19259b-4bc3-4df7-8a09-765794883524
4 files changed