screen: fix CVE-2021-26937

Apply patch from Debian to fix CVE-2021-26937.

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 6d688cc8)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>