[gnome-color-manager] Fix a critial warning when installing the shared-color-targets data

[Richard Hughes <rhughes src gnome org>]

commit cc50e5c0b5189e5cecc4c5ef02cda1a38e494f80
Author: Richard Hughes <richard hughsie com>
Date:   Fri Feb 11 13:41:13 2011 +0000

    Fix a critial warning when installing the shared-color-targets data

 src/gcm-utils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gcm-utils.c b/src/gcm-utils.c
index c9440a7..e6fa208 100644
--- a/src/gcm-utils.c
+++ b/src/gcm-utils.c
@@ -184,7 +184,7 @@ gcm_utils_install_package (const gchar *package_name, GtkWindow *window)
 						PK_DBUS_INTERFACE_MODIFY,
 						"InstallPackageNames",
 						args,
-						G_VARIANT_TYPE ("(b)"),
+						NULL,
 						G_DBUS_CALL_FLAGS_NONE,
 						G_MAXINT, NULL, &error);
 	if (response == NULL) {