From 0429a1cd8de820a09ed374414c58f74ab1483317 Mon Sep 17 00:00:00 2001
From: delphij <delphij@FreeBSD.org>
Date: Mon, 18 Jan 2016 08:52:09 +0000
Subject: [PATCH] MFV r294260:

Fix a wrong assertion in mandoc by applying OpenBSD
main.c,v 1.170 (florian):

Unbreak reading from stdin after recent parse() restructuring.
OK schwarze@
---
 contrib/mdocml/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/mdocml/main.c b/contrib/mdocml/main.c
index 3c4ff2acc247..2fc2e1eb3f95 100644
--- a/contrib/mdocml/main.c
+++ b/contrib/mdocml/main.c
@@ -720,7 +720,7 @@ parse(struct curparse *curp, int fd, const char *file)
 	/* Begin by parsing the file itself. */
 
 	assert(file);
-	assert(fd > 0);
+	assert(fd >= 0);
 
 	rctmp = mparse_readfd(curp->mp, fd, file);
 	if (fd != STDIN_FILENO)