vendor: update google/cadvisor and opencontainers/runc

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

vendor/github.com/opencontainers/selinux/go-selinux/xattrs.go

@@ -12,8 +12,8 @@ func lgetxattr(path string, attr string) ([]byte, error) {
 	// Start with a 128 length byte array
 	dest := make([]byte, 128)
 	sz, errno := unix.Lgetxattr(path, attr, dest)
-	if errno == unix.ERANGE {
-		// Buffer too small, get the real size first
+	for errno == unix.ERANGE {
+		// Buffer too small, use zero-sized buffer to get the actual size
 		sz, errno = unix.Lgetxattr(path, attr, []byte{})
 		if errno != nil {
 			return nil, errno
@@ -28,7 +28,3 @@ func lgetxattr(path string, attr string) ([]byte, error) {
 
 	return dest[:sz], nil
 }
-
-func lsetxattr(path string, attr string, data []byte, flags int) error {
-	return unix.Lsetxattr(path, attr, data, flags)
-}