Fix potential memory leak in KeyBlockVerify()

BUG=none
TEST=none

Change-Id: I17f1cff7d6f750dfd862d71941c6b8cfec57b6bf
Reviewed-on: https://gerrit.chromium.org/gerrit/22312
Commit-Ready: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
1 file changed