id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
16781	is_wp_error() simplification	hakre		please review. see #2600, [3667], [http://php.net/manual/en/function.is-a.php is_a()], [http://www.php.net/manual/en/function.is-subclass-of.php is_subclass_of()]	enhancement	new	normal	Awaiting Review	General	3.1	normal		has-patch