From 215178323034e25186f40d0e059942ec11e05eef Mon Sep 17 00:00:00 2001
From: Antonio Radici <antonio@dyne.org>
Date: Sat, 7 Jul 2012 21:57:01 -0700
Subject: [PATCH] check_charset: check for NULL before calling strtok_r (closes
 #3326)

Otherwise, if strtok_r cannot handle NULL an empty *charset setting will segfault
---
 init.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/init.c b/init.c
index efdba2db..910c6cf9 100644
--- a/init.c
+++ b/init.c
@@ -1672,6 +1672,9 @@ static int check_charset (struct option_t *opt, const char *val)
   char *p, *q = NULL, *s = safe_strdup (val);
   int rc = 0, strict = strcmp (opt->option, "send_charset") == 0;
 
+  if (!s)
+    return rc;
+
   for (p = strtok_r (s, ":", &q); p; p = strtok_r (NULL, ":", &q))
   {
     if (!*p)
-- 
2.40.0