From af60d79f5deee3e6b264049dfa8512f381a8cbc6 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Tue, 6 Nov 2007 14:21:08 +0000
Subject: [PATCH]  r16452@catbus:  nickm | 2007-11-06 09:20:08 -0500  Fix
 warning about overflow optimization.

svn:r12395
---
 src/or/command.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/or/command.c b/src/or/command.c
index 36de2d15cb..834d47e871 100644
--- a/src/or/command.c
+++ b/src/or/command.c
@@ -695,7 +695,7 @@ command_process_link_auth_cell(cell_t *cell, or_connection_t *conn)
     goto err;
   }
   len = ntohs(get_uint16(cell->payload));
-  if (len < 2 || 2+len > CELL_PAYLOAD_SIZE) {
+  if (len < 2 || len > CELL_PAYLOAD_SIZE - 2) {
     log_fn(LOG_PROTOCOL_WARN, LD_OR, "Bad length field (%d) on LINK_AUTH cell;"
            " closing the connection", (int)len);
     goto err;