Ignore empty referral strings

Some registrars return an empty field for the referral server.

1 files changed, 3 insertions, 0 deletions

diff --git a/whois.c b/whois.c
index d703996..accae8a 100644
--- a/whois.c
+++ b/whois.c
@@ -361,6 +361,9 @@ int handle_query(const char *hserver, const char *hport,
     if (!server)
 	return 1;
 
+    if (*server == '\0')
+	return 0;
+
     query_string = queryformat(server, flags, query);
     if (verb) {
 	printf(_("Using server %s.\n"), server);