xbps-src: fix an error in the unstow case.

xbps-src/shutils/stow_funcs.sh

@@ -1,5 +1,5 @@
 #-
-# Copyright (c) 2008-2009 Juan Romero Pardines.
+# Copyright (c) 2008-2010 Juan Romero Pardines.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -164,10 +164,12 @@ stow_pkg_real()
 #
 unstow_pkg_real()
 {
-	local f ver
+	local f ver lpwd
 
 	[ -z $pkgname ] && return 1
 
+	lpwd=$(pwd)
+
 	if [ $(id -u) -ne 0 ] && \
 	   [ ! -w $XBPS_MASTERDIR ]; then
 		msg_error "cannot unstow $pkgname! (permission denied)"
@@ -223,6 +225,8 @@ unstow_pkg_real()
 	rm -rf $XBPS_PKGMETADIR/$pkgname
 
 	# Unregister pkg from plist file.
-	$XBPS_PKGDB_CMD unregister $pkgname $ver
+	$XBPS_PKGDB_CMD unregister $pkgname $ver || return $?
+	cd ${lwd}
+
 	return $?
 }