BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1535
If there is Hii Structure Pcd, build will fail, root cause is that
there is an incorrect variable access method used in code.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>