[evolution-data-server] Return correct type

[Kjartan Maraas <kmaraas src gnome org>]

commit ffcc2d3d5678e38a8f263798b9884325db76389f
Author: Kjartan Maraas <kmaraas gnome org>
Date:   Fri Sep 25 21:57:01 2009 +0200

    Return correct type

 .../backends/groupwise/e-book-backend-groupwise.c  |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/addressbook/backends/groupwise/e-book-backend-groupwise.c b/addressbook/backends/groupwise/e-book-backend-groupwise.c
index 4790740..196f0aa 100644
--- a/addressbook/backends/groupwise/e-book-backend-groupwise.c
+++ b/addressbook/backends/groupwise/e-book-backend-groupwise.c
@@ -2590,7 +2590,7 @@ build_cache (EBookBackendGroupwise *ebgw)
 
 	status = e_gw_connection_get_items (ebgw->priv->cnc, ebgw->priv->container_id, "name email default members", NULL, &gw_items);
 	if (status != E_GW_CONNECTION_STATUS_OK)
-		return FALSE;
+		return NULL;
 
 	for (; gw_items != NULL; gw_items = g_list_next(gw_items)) {
 		contact_num++;