From f7d23ae7460f87966eade554e364c6f86b1c9062 Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Fri, 1 Nov 2002 18:51:22 +0000
Subject: [PATCH] Prevent another segfault. Oops.

[originally from svn r2178]
---
 unix/uxplink.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/unix/uxplink.c b/unix/uxplink.c
index dab69475..6c5b5544 100644
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -111,6 +111,9 @@ void try_output(int is_stderr)
     void *senddata;
     int sendlen, ret;
 
+    if (bufchain_size(chain) == 0)
+        return;
+
     bufchain_prefix(chain, &senddata, &sendlen);
     ret = write(fd, senddata, sendlen);
     if (ret > 0)