The cleanup to sysinfo package introduced a regression.
If memory cgroup isn't supported and --memory is specified when
starting a container, we should return info instead of nil in
checkCgroupMem(), otherwise we'll access a nil pointer.
Signed-off-by: Zefan Li <lizefan@huawei.com>
Upstream-commit: 439869320177f56a559ef189f5ce29f24cf99e12
Component: engine