Be nice and "handle" error return values in sample code

Caught by clang's static analyzer

diff --git a/sample/dns-example.c b/sample/dns-example.c
index 439a486ac19e76c0c85ce31756462b3f7d2a788e..2845cb993169bff631cbdcbf5d61c47247ed4c5d 100644 (file)
--- a/sample/dns-example.c
+++ b/sample/dns-example.c
@@ -120,6 +120,8 @@ evdns_server_callback(struct evdns_server_request *req, void *data)
                        printf(" -- replying for %s (PTR)\n", req->questions[i]->name);
                        r = evdns_server_request_add_ptr_reply(req, NULL, req->questions[i]->name,
                                                                                        "foo.bar.example.com", 10);
+                       if (r<0)
+                               printf("ugh, no luck");
                } else {
                        printf(" -- skipping %s [%d %d]\n", req->questions[i]->name,
                                   req->questions[i]->type, req->questions[i]->dns_question_class);