# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1339289377 18000
# Node ID be4b2d3796eb558bac217b163171a536ab57c5b1
# Parent  7c4ca3f0536b934136949b81dc6f2a6fd633cfe9
Feeding -1 to xdup() isn't an error.

diff -r 7c4ca3f0536b -r be4b2d3796eb lib/lib.c
--- a/lib/lib.c	Sat Jun 09 19:06:49 2012 -0500
+++ b/lib/lib.c	Sat Jun 09 19:49:37 2012 -0500
@@ -210,8 +210,10 @@
 
 int xdup(int fd)
 {
-	fd = dup(fd);
-	if (fd == -1) perror_exit("xdup");
+	if (fd != -1) {
+		fd = dup(fd);
+		if (fd == -1) perror_exit("xdup");
+	}
 	return fd;
 }