util/cbi-util: Check pointer before using it

Change-Id: If11de8883b001f16d7e8f859a416fbdc5ea0391a
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Found-by: Coverity Scan #187038
Reviewed-on: https://chromium-review.googlesource.com/1151121
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
1 file changed