the_media_upload_tabs() always shows first tab as active

[fuggi]

When parameter $_GET[tab] is not passed over to media-upload.php it will show the default tab that is returned by $tab = apply_filters('media_upload_default_tab', 'type');

However the tabbar created by function the_media_upload_tabs() at the top will always show the first tab as active if the parameter is missing:

if ( isset($_GET['tab']) && array_key_exists($_GET['tab'], $tabs) )
	$current = $_GET['tab'];
else {
	$keys = array_keys($tabs);
	$current = array_shift($keys);
}

This should be changed so that the default tab in this case is also the default tab:

if ( isset($_GET['tab']) && array_key_exists($_GET['tab'], $tabs) )
	$current = $_GET['tab'];
else {
	$current = apply_filters('media_upload_default_tab', 'type');
}

A patch is attached. Another possibility would be to use global $tab; that should already be defined when the function is called.

[fuggi]

Patch for defect

[azaozz]

(In [11051]) Properly set the default tab in the uploader, props fuggi, fixes #7219