From 00e91b3c8de2096ee0a8c6a341c305ecaf801f46 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 20 Apr 2011 13:27:31 -0400
Subject: [PATCH] Fix a crash bug in evdns server circular list code

Really, this should use a circleq.  That's a change for 2.1, though.
---
 evdns.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/evdns.c b/evdns.c
index 583c253a..ae39d17e 100644
--- a/evdns.c
+++ b/evdns.c
@@ -1993,7 +1993,7 @@ server_request_free(struct server_request *req)
 		EVDNS_LOCK(req->port);
 		lock=1;
 		if (req->port->pending_replies == req) {
-			if (req->next_pending)
+			if (req->next_pending && req->next_pending != req)
 				req->port->pending_replies = req->next_pending;
 			else
 				req->port->pending_replies = NULL;
-- 
2.40.0