Revert 1.25 and 1.26: Breaks build on !NetBSD

tools/host-mkdep/host-mkdep.in

@@ -1,6 +1,6 @@
 #!@BSHELL@ -
 #
-#	$NetBSD: host-mkdep.in,v 1.26 2013/03/12 01:55:33 christos Exp $
+#	$NetBSD: host-mkdep.in,v 1.27 2013/03/14 14:55:35 joerg Exp $
 #
 # Copyright (c) 1991, 1993
 #	The Regents of the University of California.  All rights reserved.
@@ -69,12 +69,6 @@ set_objlist()
 	fi
 }
 
-# Send the command output to 4, and a command to set the exit code to 5
-run_cmd() {
-	"$@" 1>&4 4>&-
-	echo rv=$? 1>&5 5>&-
-}
-
 # A getopt compatible command line parser in shell comands.
 # (don't trust the shell builtin getopts to be in a known state on error)
 while [ $# -gt 0 ]; do
@@ -232,13 +226,12 @@ if $MERGE; then
 		done <$f
 	done >$TMP
 else
-	exec 5>&1
 	for f in $SRCS; do
 		file=${f##*/}
 		file=${file%.*}
 		set_objlist $file
 
-		eval $( (run_cmd @CPP@ "$@" $f 4>&1 | @AWK@ '
+		@CPP@ "$@" $f | @AWK@ '
 			/^#/ {
 				# Be as tolerant as possible.
 				sub(/^#(line)? [ 0-9]*\"?/, "")
@@ -254,11 +247,7 @@ else
 				print "'"$objlist"'" ": " $0
 				'"$AWK_OPTIONAL"'
 			}
-		' >> $TMP) 5>&1)
-		case "$rv" in
-		0);;
-		*)	exit $rv;;
-		esac
+		' >> $TMP
 	done
 fi