Message headers not added when node is posted

I think that mailcomment_notifications_message_alter is checking for the wrong event type. It is checking for $event->type=='node' and it should be checking for event 'node-post'.

Here's the broken code:
if (($event->type == 'node' || $event->type == 'node-comment') && !empty($event->objects['node'])) {

Here's the fixed code:
if (($event->type == 'node-post' || $event->type == 'node-comment') && !empty($event->objects['node'])) {
Patch to follow.