From 555f8f30f46a5f5e9c5567560255ca8b6ef116e4 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 18 Aug 2004 07:06:53 +0000
Subject: [PATCH] Avoid segfault when freeing options_t without firewall_ports

svn:r2279
---
 src/or/config.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/or/config.c b/src/or/config.c
index 6d09b77644..e68d7ba5f9 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -545,8 +545,10 @@ static void free_options(or_options_t *options) {
   config_free_lines(options->DirBindAddress);
   config_free_lines(options->ExitPolicy);
   config_free_lines(options->SocksPolicy);
-  SMARTLIST_FOREACH(options->FirewallPorts, char *, cp, tor_free(cp));
-  smartlist_free(options->FirewallPorts);
+  if (options->FirewallPorts) {
+    SMARTLIST_FOREACH(options->FirewallPorts, char *, cp, tor_free(cp));
+    smartlist_free(options->FirewallPorts);
+  }
 }
 
 /** Set <b>options</b> to hold reasonable defaults for most options. */