Fix securid_sam2 preauth for non-default salt

When looking up the client long-term key, look for any salt type, not
just the default salt type.

https://github.com/krb5/krb5/commit/a2339099ad13c84de0843fd04d0ba612fc194a1e
Author: Greg Hudson <ghudson@mit.edu>
Commit: a2339099ad13c84de0843fd04d0ba612fc194a1e
Branch: master
 src/plugins/preauth/securid_sam2/grail.c    |    3 +--
 src/plugins/preauth/securid_sam2/securid2.c |    3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)