[evolution-data-server] EBookBackendFile: Restore g_type_ensure() calls

[Mathias Hasselmann <hasselmm src gnome org>]

commit b00e9fb41e2fbf7e90efadac49ba5ec8da5254e9
Author: Mathias Hasselmann <mathias openismus com>
Date:   Thu Feb 7 17:31:37 2013 +0100

    EBookBackendFile: Restore g_type_ensure() calls
    
    Few things got lost in 01857aacc17e0da2766d6c03b3f84efb0cf1392d

 addressbook/backends/file/e-book-backend-file.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/addressbook/backends/file/e-book-backend-file.c b/addressbook/backends/file/e-book-backend-file.c
index c4c2696..8f7c919 100644
--- a/addressbook/backends/file/e-book-backend-file.c
+++ b/addressbook/backends/file/e-book-backend-file.c
@@ -1286,7 +1286,7 @@ e_book_backend_file_open (EBookBackendSync *backend,
 
 	source = e_backend_get_source (E_BACKEND (backend));
 
-	g_type_ensure (E_TYPE_SOURCE_BACKEND_SUMMARY_SETUP);
+	g_type_ensure (E_TYPE_SOURCE_REVISION_GUARDS);
 	guards = e_source_get_extension (source, E_SOURCE_EXTENSION_REVISION_GUARDS);
 
 	bf->priv->revision_guards = e_source_revision_guards_get_enabled (guards);
@@ -1467,6 +1467,7 @@ book_backend_file_initable_init (GInitable *initable,
 	source = e_backend_get_source (E_BACKEND (initable));
 	registry = e_book_backend_get_registry (E_BOOK_BACKEND (initable));
 
+	g_type_ensure (E_TYPE_SOURCE_BACKEND_SUMMARY_SETUP);
 	extension_name = E_SOURCE_EXTENSION_BACKEND_SUMMARY_SETUP;
 	setup_extension = e_source_get_extension (source, extension_name);