post_author_meta_box( object $post )

function post_author_meta_box($post) {
	global $user_ID;
?>
<label class="screen-reader-text" for="post_author_override"><?php _e('Author'); ?></label>
<?php
	wp_dropdown_users( array(
		'who' => 'authors',
		'name' => 'post_author_override',
		'selected' => empty($post->ID) ? $user_ID : $post->post_author,
		'include_selected' => true,
		'show' => 'display_name_with_login',
	) );
}