Fixed:

-----------------------------
Argument 2 passed to Ostatus_profile::notifyDeferred() must be an
instance of Profile, instance of User given, called in
/var/www/htdocs/plugins/OStatus/lib/ostatusqueuehandler.php on line 156 and
defined (/var/www/htdocs/plugins/OStatus/classes/Ostatus_profile.php:363)
[ABORT]
-----------------------------
getProfile() must be called on this->user

Plus fixed/added some type-hints.

Signed-off-by: Roland Haeder <roland@mxchange.org>