krb5 commit: Make KCM iteration fallback work with sssd-kcm

[Greg Hudson]

https://github.com/krb5/krb5/commit/06afae820a44c1dc96ad88a0b16c3e50bc938b2a
commit 06afae820a44c1dc96ad88a0b16c3e50bc938b2a
Author: Pavel Březina <pbrezina at redhat.com>
Date:   Tue Mar 30 14:35:28 2021 +0200

    Make KCM iteration fallback work with sssd-kcm
    
    sssd-kcm returns KRB5_CC_IO if the operation code is not known.
    
    ticket: 8990

 src/lib/krb5/ccache/cc_kcm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/lib/krb5/ccache/cc_kcm.c b/src/lib/krb5/ccache/cc_kcm.c
index 1f81a21..46705f1 100644
--- a/src/lib/krb5/ccache/cc_kcm.c
+++ b/src/lib/krb5/ccache/cc_kcm.c
@@ -876,7 +876,7 @@ kcm_start_seq_get(krb5_context context, krb5_ccache cache,
         ret = kcmreq_get_cred_list(&req, &creds);
         if (ret)
             goto cleanup;
-    } else if (ret == KRB5_FCC_INTERNAL) {
+    } else if (ret == KRB5_FCC_INTERNAL || ret == KRB5_CC_IO) {
         /* Fall back to GET_CRED_UUID_LIST. */
         kcmreq_free(&req);
         kcmreq_init(&req, KCM_OP_GET_CRED_UUID_LIST, cache);