[xdg-user-dirs-gtk] Fix build with automake 1.13

[Matthias Clasen <matthiasc src gnome org>]

commit ffce74018fe7a2f560798d77c4fd675a17f20ff4
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 21 08:22:33 2013 -0500

    Fix build with automake 1.13

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e61a658..38cd410 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_INIT(parse.c)
 
 AM_INIT_AUTOMAKE(xdg-user-dirs-gtk, 0.10)
-AM_CONFIG_HEADER(config.h)
-	
+AC_CONFIG_HEADERS([config.h])
+
 AM_SANITY_CHECK
 AM_MAINTAINER_MODE