From 58e813d0fcfcecfc2017255f2d8943cd26a4b2e7 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 18 Sep 2014 11:13:57 -0400
Subject: [PATCH] Fix a double-free in failing case of
 handle_control_authenticate.

Bugfix on ed8f020e205267e6270494634346ab68d830e1d8; bug not in any
released version of Tor.  Found by Coverity; this is CID 1239290.
---
 src/or/control.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/or/control.c b/src/or/control.c
index 60aa869439..7038b2cfd5 100644
--- a/src/or/control.c
+++ b/src/or/control.c
@@ -1177,6 +1177,7 @@ handle_control_authenticate(control_connection_t *conn, uint32_t len,
       });
       SMARTLIST_FOREACH(sl, char *, cp, tor_free(cp));
       smartlist_free(sl);
+      sl = NULL;
 
       if (used_quoted_string)
         errstr = "Password did not match HashedControlPassword value from "
-- 
2.47.3