[evolution] Fix typo in e_mail_reader_refresh_folder_name().

[Matthew Barnes <mbarnes src gnome org>]

commit 6565a88ded370eb48a25377f46b5fb2a7c9307f5
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Jul 13 20:02:12 2013 -0400

    Fix typo in e_mail_reader_refresh_folder_name().
    
    We were leaking the EActivity.  Wonder if this is the mystery activity
    that's been blocking application shutdown lately.

 mail/e-mail-reader-utils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/mail/e-mail-reader-utils.c b/mail/e-mail-reader-utils.c
index 5fb7c64..2a3c4c6 100644
--- a/mail/e-mail-reader-utils.c
+++ b/mail/e-mail-reader-utils.c
@@ -672,7 +672,7 @@ e_mail_reader_refresh_folder_name (EMailReader *reader,
                mail_reader_refresh_folder_name_cb,
                async_context);
 
-       g_object_unref (async_context);
+       g_object_unref (activity);
 }
 
 /* Helper for e_mail_reader_unsubscribe_folder_name() */