abuild: fix runpart

we need to run the function for runpart in the same shell, otherwise we
will lose the global variables set in the split functions.

abuild.in

@@ -566,9 +566,9 @@ update_config_guess() {
 runpart() {
 	local part=$1
 	[ -n "$DEBUG" ] && msg "$part"
-	abuild_function=$part "$abuild_path" \
-		$color_opt $nodeps $force $forceroot $keep $quiet \
-		$install_deps $recursive $upgrade || die "$part failed"
+	trap "die '$part failed'" EXIT
+	$part
+	trap - EXIT
 }
 
 # override those in your build script
@@ -2340,22 +2340,15 @@ controldir="$pkgbasedir"/.control.${subpkgname:-$pkgname}
 
 trap 'die "Aborted by user"' INT
 
-if [ "$abuild_function" ]; then
-	_function=$abuild_function
-	abuild_function=
-	$_function
+[ -z "$subpkgdir" ] && set_xterm_title "abuild${CROSS_COMPILE+-$CARCH}: $pkgname"
 
-else
-	[ -z "$subpkgdir" ] && set_xterm_title "abuild${CROSS_COMPILE+-$CARCH}: $pkgname"
-
-	if [ -z "$1" ]; then
-		set all
-	fi
-
-	while [ $# -gt 0 ]; do
-		runpart $1
-		shift
-	done
+if [ -z "$1" ]; then
+	set all
 fi
 
+while [ $# -gt 0 ]; do
+	runpart $1
+	shift
+done
+
 cleanup