fix seg fault of evolution-data-server when adding default vcard

This is one simple patch to fix seg fault of evolution-data-server, when new contact is added for new created DB.

The root cause is simple: do_create (bf, XIMIAN_VCARD,....) would access bf->priv->file_db and cause seg fault if not initialized.

I have created one bz https://bugzilla.gnome.org/show_bug.cgi?id=648736, also attached patch for comments.

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Adding default vcard for new created DB always failed with seg fault, as file_db was not initialized before access. This patch fix it.

Index: evolution-data-server/addressbook/backends/file/e-book-backend-file.c
===================================================================
---
evolution-data-server.orig/addressbook/backends/file/e-book-backend-file.c

2011-04-26 15:46:03.000000000 +0800
+++
evolution-data-server/addressbook/backends/file/e-book-backend-file.c   2011-04-26 15:59:13.000000000 +0800
@@ -1247,6 +1247,8 @@
#ifdef CREATE_DEFAULT_VCARD
                EContact *contact = NULL;

+ /* Initialize file_db, or else following do_create
cause seg fault */
+ bf->priv->file_db = db;
if (!do_create (bf, XIMIAN_VCARD, &contact, NULL))
g_warning ("Cannot create default contact");
if (contact)

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