From 58a1828f188506b5d03591cb5a7db24895f62fa8 Mon Sep 17 00:00:00 2001
From: "nethack.allison" <nethack.allison>
Date: Mon, 2 Oct 2006 03:43:31 +0000
Subject: [PATCH] win32

The new runtime has parameter checking, and this one
would cause NetHack pop up a dialog and die.
---
 src/files.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/files.c b/src/files.c
index 75f276c98..457706c25 100644
--- a/src/files.c
+++ b/src/files.c
@@ -629,7 +629,8 @@ really_close()
 	lftrack.nethack_thinks_it_is_open = FALSE;
 	lftrack.fd = -1;
 	lftrack.oflag = 0;
-	(void)_close(fd);
+	if (fd != -1)
+		(void)_close(fd);
 	return;
 }