[evolution-data-server] Change how CamelOfflineStore goes online

[Milan Crha <mcrha src gnome org>]

commit c59660e75e9f7bb60321d01e1e62b0442ad8e7d5
Author: Milan Crha <mcrha redhat com>
Date:   Tue Jun 11 22:47:33 2019 +0200

    Change how CamelOfflineStore goes online
    
    As it was, when the store went online, it just connected, even the code
    tried to do some things when going online, like synchronizing messages
    for offline use. The change allows to do what was meant to be done.

 src/camel/camel-offline-store.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/camel/camel-offline-store.c b/src/camel/camel-offline-store.c
index 148c6e5b0..73793493d 100644
--- a/src/camel/camel-offline-store.c
+++ b/src/camel/camel-offline-store.c
@@ -275,7 +275,8 @@ camel_offline_store_set_online_sync (CamelOfflineStore *store,
                if (camel_service_get_connection_status (service) == CAMEL_SERVICE_CONNECTING)
                        return TRUE;
 
-               return camel_service_connect_sync (service, cancellable, error);
+               if (!camel_service_connect_sync (service, cancellable, error))
+                       return FALSE;
        }
 
        if (host_reachable) {
@@ -339,9 +340,11 @@ camel_offline_store_set_online_sync (CamelOfflineStore *store,
                        service, host_reachable, cancellable, error);
        }
 
-       store->priv->online = online;
+       if (store->priv->online != online) {
+               store->priv->online = online;
 
-       g_object_notify (G_OBJECT (store), "online");
+               g_object_notify (G_OBJECT (store), "online");
+       }
 
        return success;
 }