From 153544c8b2532b0290fdbaa792ef447b4813f90a Mon Sep 17 00:00:00 2001
From: Ian Gulliver <flamingcow@gmail.com>
Date: Sat, 27 Feb 2016 22:03:56 -0800
Subject: [PATCH] Fix crash sending protocols without a greeting.

---
 adsbus/send.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/adsbus/send.c b/adsbus/send.c
index 42b2255..551cc0d 100644
--- a/adsbus/send.c
+++ b/adsbus/send.c
@@ -138,7 +138,9 @@ void send_new_wrapper(int fd, void *passthrough, struct peer *on_close) {
 
 void send_hello(struct buf **buf_pp, void *passthrough) {
 	struct serializer *serializer = (struct serializer *) passthrough;
-	serializer->hello(buf_pp);
+	if (serializer->hello) {
+		serializer->hello(buf_pp);
+	}
 }
 
 void send_write(struct packet *packet) {