[evolution] MailFolderCache: Fix a crash when renaming folders.

[Matthew Barnes <mbarnes src gnome org>]

commit 209387d4e37fe665c385ef56886b119f7896890f
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Jul 19 08:33:21 2013 -0400

    MailFolderCache: Fix a crash when renaming folders.

 libemail-engine/mail-folder-cache.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libemail-engine/mail-folder-cache.c b/libemail-engine/mail-folder-cache.c
index c31e7a1..d536f6d 100644
--- a/libemail-engine/mail-folder-cache.c
+++ b/libemail-engine/mail-folder-cache.c
@@ -1111,7 +1111,7 @@ rename_folders (MailFolderCache *cache,
        old = g_strdup_printf ("%s%s", oldbase, fi->full_name + strlen (newbase));
        old_folder_info = store_info_steal_folder_info (store_info, old);
        if (old_folder_info != NULL) {
-               up->oldfull = old_folder_info->full_name;
+               up->oldfull = g_strdup (old_folder_info->full_name);
                up->signal_id = signals[FOLDER_RENAMED];
                folder_info_unref (old_folder_info);
        }