re-directing once is good enough.

tools/host-mkdep/host-mkdep.in

@@ -1,6 +1,6 @@
 #!@BSHELL@ -
 #
-#	$NetBSD: host-mkdep.in,v 1.25 2013/03/12 01:52:20 christos Exp $
+#	$NetBSD: host-mkdep.in,v 1.26 2013/03/12 01:55:33 christos Exp $
 #
 # Copyright (c) 1991, 1993
 #	The Regents of the University of California.  All rights reserved.
@@ -70,7 +70,6 @@ set_objlist()
 }
 
 # Send the command output to 4, and a command to set the exit code to 5
-exec 5>&1
 run_cmd() {
 	"$@" 1>&4 4>&-
 	echo rv=$? 1>&5 5>&-