Notification sent to wrong User

[lianglee]

There is a post with few comments. [post_guid: 1]

1. User A Commented [annotation:1]
2. User B commented [annotation:2]
3. User C commented [annotation:3]

There is a post [post_guid:3]
1.User A commented [annotation:xx]

Now when someone likes the annotation:3, it will notify user C which is normal. But what not normal is it will also notify user A , because:

$paricipates = $this->get_comments_participates($subject_guid);
[get_comments_participates will search notifications where type: comment:post] and when subject type : annotation is liked with subject_guid 3 , it will mixup the annotation_id with post id. Resulting in returning wrong participates

So we need to check also like:annotation

//notify participates
if($type !== 'like:post' && $type !== 'like:annotation') {//}}

Further there is unused code in OssnNotification:add()

if($poster_guid == $guid_two) {} 
There is no $guid_two within  add()