Backport patch to fix CVE-2021-33477 for rxvt-unicode.
(From OE-Core rev: ad7582bcef28da48b9a7f97eb43805f393f4979a)
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>