[evolution-data-server] CamelSession: Avoid spurious "notify::online" signals.

[Matthew Barnes <mbarnes src gnome org>]

commit 27789ee4cf1ee9664c36f9fcce0cc2f71a954967
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Jan 21 10:53:52 2012 -0500

    CamelSession: Avoid spurious "notify::online" signals.

 camel/camel-session.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/camel/camel-session.c b/camel/camel-session.c
index 8500f21..0b183dd 100644
--- a/camel/camel-session.c
+++ b/camel/camel-session.c
@@ -1219,6 +1219,9 @@ camel_session_set_online (CamelSession *session,
 {
 	g_return_if_fail (CAMEL_IS_SESSION (session));
 
+	if (online == session->priv->online)
+		return;
+
 	session->priv->online = online;
 
 	g_object_notify (G_OBJECT (session), "online");