net_Listen: don't print NULL

src/network/io.c

@@ -136,12 +136,14 @@ int *net_Listen (vlc_object_t *p_this, const char *psz_host,
     hints.ai_protocol = protocol;
     hints.ai_flags = AI_PASSIVE;
 
-    msg_Dbg (p_this, "net: listening to %s port %d", psz_host, i_port);
+    msg_Dbg (p_this, "net: listening to %s port %d",
+             (psz_host != NULL) ? psz_host : "*", i_port);
 
     int i_val = vlc_getaddrinfo (p_this, psz_host, i_port, &hints, &res);
     if (i_val)
     {
-        msg_Err (p_this, "Cannot resolve %s port %d : %s", psz_host, i_port,
+        msg_Err (p_this, "Cannot resolve %s port %d : %s",
+                 (psz_host != NULL) ? psz_host : "", i_port,
                  gai_strerror (i_val));
         return NULL;
     }