Don't set post_parent default. Props hailin. fixes #8348

git-svn-id: https://develop.svn.wordpress.org/trunk@9906 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/post.php

@@ -464,7 +464,7 @@ function get_posts($args = null) {
 		'order' => 'DESC', 'include' => '',
 		'exclude' => '', 'meta_key' => '',
 		'meta_value' =>'', 'post_type' => 'post',
-		'post_parent' => 0, 'suppress_filters' => true
+		'suppress_filters' => true
 	);
 
 	$r = wp_parse_args( $args, $defaults );