[baobab] Adapt to vala bindings update

[Stefano Facchini <sfacchini src gnome org>]

commit cfd5020531e016d44894f873abf917ee28495346
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Mon Jun 17 22:21:01 2013 +0200

    Adapt to vala bindings update

 configure.ac                  |    2 +-
 src/baobab-location-list.vala |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 67aea95..7911b39 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,7 +29,7 @@ AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE",[The name of the gettext d
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
-AM_PROG_VALAC([0.20.1.40])
+AM_PROG_VALAC([0.20.1.41])
 PKG_PROG_PKG_CONFIG([0.22])
 
 ## don't rerun to this point if we abort
diff --git a/src/baobab-location-list.vala b/src/baobab-location-list.vala
index 6b9849a..baa4d8c 100644
--- a/src/baobab-location-list.vala
+++ b/src/baobab-location-list.vala
@@ -97,7 +97,7 @@ namespace Baobab {
             monitor.volume_added.connect (volume_added);
 
             set_selection_mode (Gtk.SelectionMode.NONE);
-            set_header_func (update_header, null);
+            set_header_func (update_header);
 
             populate ();
         }