cg_name(const char *root, const char *name) is always called with
non-empty root and name arguments, so there is no sense in checking
it in the function body (after using in strlen()).
Signed-off-by: NRoman Gushchin <guro@fb.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>