The cbmem routines pass back NULL on error. Check for this before using
the pointer.
Addresses coverity issue 1365731 - Dereference null return value
Change-Id: I92995366ffb15afd0950b9a8bbb6fe16252b2c38
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17480
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
53bd26f531