id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
21876,unregister_default_headers() will sometimes return null,conner_bw,,"File: wp-includes/theme.php
Function: unregister_default_headers()
Line: ~1046

Problem: 
PHPDoc comment says: @return True on success, false on failure.

Expected:
true or false:

Actual:
`var_dump(unregister_default_headers(array('FAKE')));` will return NULL

Suggested fix, change:
{{{
function unregister_default_headers( $header ) {
	global $_wp_default_headers;
	if ( is_array( $header ) ) {
		array_map( 'unregister_default_headers', $header );
	} elseif ( isset( $_wp_default_headers[ $header ] ) ) {
		unset( $_wp_default_headers[ $header ] );
		return true;
	} else {
		return false;
	}
}
}}}

To:
{{{
function unregister_default_headers( $header ) {
	global $_wp_default_headers;
	if ( is_array( $header ) ) {
	        $_ret = array_map( 'unregister_default_headers', $header );
	        return in_array(false, $_ret, true) ? false : true;
	} elseif ( isset( $_wp_default_headers[ $header ] ) ) {
		unset( $_wp_default_headers[ $header ] );
		return true;
	} else {
		return false;
	}
}
}}}

Thank you for your consideration.",defect (bug),new,normal,Awaiting Review,Themes,3.4.2,minor,,,