From db2794cea96bcf2f953bc5da5071043e2dd665ce Mon Sep 17 00:00:00 2001
From: Martin Ling <martin-git@earth.li>
Date: Wed, 8 May 2013 02:55:43 +0100
Subject: [PATCH] Fix list append.

---
 serialport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/serialport.c b/serialport.c
index 60a1a75..6fc5268 100644
--- a/serialport.c
+++ b/serialport.c
@@ -56,12 +56,13 @@ static char **sp_list_append(char **list, void *data, size_t len)
 	void *tmp;
 	unsigned int count;
 	for (count = 0; list[count]; count++);
-	if (!(tmp = realloc(list, sizeof(char *) * (++count + 1))))
+	if (!(tmp = realloc(list, sizeof(char *) * (count + 2))))
 		goto fail;
 	list = tmp;
 	if (!(list[count] = malloc(len)))
 		goto fail;
 	memcpy(list[count], data, len);
+	list[count + 1] = NULL;
 	return list;
 fail:
 	sp_free_port_list(list);