The check for zero sized resources is already done earlier. So don't redo it

The check for zero sized resources is already done earlier. So don't redo it
here. I think we don't ever want to drop the extra check, since it indicates
that the components involved need fixing.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4876 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1