fix print of NULL

diff --git a/host2str.c b/host2str.c
index 4d08a11cad0d58d8b9b94d72308eccc0889ab25f..bbedc241803c66d8951de63f841274055aa67e9b 100644 (file)
--- a/host2str.c
+++ b/host2str.c
@@ -2039,7 +2039,9 @@ ldns_resolver_print(FILE *output, const ldns_resolver *r)
        fprintf(output, "trust anchors (%d listed):\n",
                (int)ldns_rr_list_rr_count(ldns_resolver_dnssec_anchors(r)));
        ldns_rr_list_print(output, ldns_resolver_dnssec_anchors(r));
-       fprintf(output, "tsig: %s %s\n", ldns_resolver_tsig_keyname(r), ldns_resolver_tsig_algorithm(r));
+       fprintf(output, "tsig: %s %s\n",
+                ldns_resolver_tsig_keyname(r)?ldns_resolver_tsig_keyname(r):"-",
+                ldns_resolver_tsig_algorithm(r)?ldns_resolver_tsig_algorithm(r):"-");
        fprintf(output, "debug: %d\n", ldns_resolver_debug(r));
 
        fprintf(output, "default domain: ");