NULL pointer use as described at nvd.nist.gov/vuln/detail/CVE-2018-7456.
(From OE-Core rev: 122da5cec495fc8ddfd880327e7c3ed0dc70e04f)
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>