[PATCH 1/3] Fix double free in guess_from_received_header().

[Dmitry Kurochkin]

Before the change, the last loop in guess_from_received_header()
did not reset domain and tld variables to NULL.  This leads to
double free error in some cases and possibly other bugs.
---
 notmuch-reply.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/notmuch-reply.c b/notmuch-reply.c
index 514bbc6..dab69e6 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -406,6 +406,7 @@ guess_from_received_header (notmuch_config_t *config, notmuch_message_t *message
 	/* Now extract the last two components of the MTA host name
 	 * as domain and tld.
 	 */
+	domain = tld = NULL;
 	while ((ptr = strsep (&token, delim)) != NULL) {
 	    if (*ptr == '\0')
 		continue;
-- 
1.7.5.4