first parameter of wp_admin_css() is not optional in docblock

[hakre]

It is either a documentation problem or a code problem:

wp_admin_css( 'css/global' );
wp_admin_css();
wp_admin_css( 'css/colors' );
wp_admin_css( 'css/ie' );

See second line. In /wordpress-trunk/wp-admin/admin-header.php line 37.

[hakre]

Not optional.

[hakre]

Documentation problem.

[hakre]

I provided a patch for both cases, I think it's the documentation problem (second patch) as the parameter is optional in code.

[nacin]

function wp_admin_css( $file = 'wp-admin', $force_echo = false ) looks optional to me.

[nacin]

(In [15616]) Make note of an optional argument. props hakre, fixes #14870.