In kr_attrset_decode(), explicitly treat the length byte as unsigned.
Otherwise attributes longer than 125 characters will be rejected with
EBADMSG.
Add a 253-character-long NAS-Identifier attribute to the tests to make
sure that attributes with the maximal number of characters are working
as expected.
[ghudson@mit.edu: used uint8_t cast per current practices; edited
commit message]
ticket: 9036 (new)
From upstream, needed in preparation for OAuth2 support for FreeIPA and
SSSD.
Resolves: rhbz#2100351
Signed-off-by: Julien Rische <jrische@redhat.com>
