From 6a9a707a9cc9eddfed909b996e09d624bf657d3c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Sat, 14 Feb 2015 07:22:28 +0100
Subject: [PATCH] Avoid null pointer dereference

In irc_listen_resolve() with NULL `host'.
---
 common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common.c b/common.c
index 3bbdd78..009d325 100644
--- a/common.c
+++ b/common.c
@@ -1689,6 +1689,8 @@ xssl_get_error (SSL *ssl, int result, const char **error_info)
 static char *
 format_host_port_pair (const char *host, const char *port)
 {
+	if (!host)
+		host = "";
 	// IPv6 addresses mess with the "colon notation"; let's go with RFC 2732
 	if (strchr (host, ':'))
 		return xstrdup_printf ("[%s]:%s", host, port);