From 1fc7f8b3dfeaed655392eb0b30f841d54494a2a1 Mon Sep 17 00:00:00 2001
From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Mon, 17 Apr 2017 12:10:35 +0100
Subject: [PATCH] Fix post's die() to save errno before unlink(2)ing.

---
 uip/post.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/uip/post.c b/uip/post.c
index 7cc111e4..c98f67ed 100644
--- a/uip/post.c
+++ b/uip/post.c
@@ -2006,8 +2006,11 @@ fcc (char *file, char *folder)
 static void
 die (char *what, char *fmt, ...)
 {
+    int err;
     va_list ap;
 
+    err = errno;
+
     (void) m_unlink (tmpfil);
     if (msgflags & MINV)
 	(void) m_unlink (bccfil);
@@ -2016,6 +2019,7 @@ die (char *what, char *fmt, ...)
 	sm_end (NOTOK);
 
     va_start(ap, fmt);
+    errno = err;
     advertise (what, NULL, fmt, ap);
     va_end(ap);
     done (1);
-- 
2.56.0