From 2c17bf21afb4f3ccb09559f3eee0ad50b8ac0c8e Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 14 Feb 2018 09:23:55 -0600
Subject: [PATCH] net/tcp:  Missing header file inclusion in tcp_wrbuffer.c

---
 net/tcp/tcp_wrbuffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/tcp/tcp_wrbuffer.c b/net/tcp/tcp_wrbuffer.c
index 9cd8e798b3..c203285ce7 100644
--- a/net/tcp/tcp_wrbuffer.c
+++ b/net/tcp/tcp_wrbuffer.c
@@ -51,6 +51,7 @@
 #include <queue.h>
 #include <string.h>
 #include <assert.h>
+#include <errno.h>
 #include <debug.h>
 
 #include <nuttx/semaphore.h>