[evolution] Do not prompt for offline when mail backend not started

[Milan Crha <mcrha src gnome org>]

commit 3dbad4ffb4f2477c1ec2f101d2687bbf3c46e795
Author: Milan Crha <mcrha redhat com>
Date:   Wed Mar 9 16:59:40 2011 +0100

    Do not prompt for offline when mail backend not started

 mail/e-mail-backend.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/mail/e-mail-backend.c b/mail/e-mail-backend.c
index c75f7c9..b1eec7e 100644
--- a/mail/e-mail-backend.c
+++ b/mail/e-mail-backend.c
@@ -119,7 +119,7 @@ mail_backend_prepare_for_offline_cb (EShell *shell,
 	window = e_shell_get_active_window (shell);
 	session = e_mail_backend_get_session (backend);
 
-	if (e_shell_get_network_available (shell))
+	if (e_shell_get_network_available (shell) && e_shell_backend_is_started (E_SHELL_BACKEND (backend)))
 		synchronize = em_utils_prompt_user (
 			window, NULL, "mail:ask-quick-offline", NULL);