From fa8f6cb204b4a7200fbdd1e4f5f15327471fd50a Mon Sep 17 00:00:00 2001
From: likewise <likewise>
Date: Tue, 14 Jan 2003 12:54:02 +0000
Subject: [PATCH] Free incoming pbuf's in the TCP event macro if the recv
 callback is NULL. Fixes bug #2156.

---
 src/include/lwip/tcp.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/include/lwip/tcp.h b/src/include/lwip/tcp.h
index dcd75e30..ea1a265b 100644
--- a/src/include/lwip/tcp.h
+++ b/src/include/lwip/tcp.h
@@ -323,7 +323,8 @@ struct tcp_pcb_listen {
                         (ret = (pcb)->sent((pcb)->callback_arg,(pcb),(space)))
 #define TCP_EVENT_RECV(pcb,p,err,ret) \
                         if((pcb)->recv != NULL) \
-                        (ret = (pcb)->recv((pcb)->callback_arg,(pcb),(p),(err)))
+                        { ret = (pcb)->recv((pcb)->callback_arg,(pcb),(p),(err)); } else { \
+						pbuf_free(p); }
 #define TCP_EVENT_CONNECTED(pcb,err,ret) \
                         if((pcb)->connected != NULL) \
                         (ret = (pcb)->connected((pcb)->callback_arg,(pcb),(err)))