Comments: don't auto-close comments on draft posts.

Adds unit tests.

Props solarissmoke, MikeHansenMe, nacin, rachelbaker.
Fixes #20262.

Built from https://develop.svn.wordpress.org/trunk@35475


git-svn-id: http://core.svn.wordpress.org/trunk@35439 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/comment-functions.php

@@ -2592,6 +2592,11 @@ function _close_comments_for_old_post( $open, $post_id ) {
 	if ( ! in_array( $post->post_type, $post_types ) )
 		return $open;
 
+	// Undated drafts should not show up as comments closed.
+	if ( '0000-00-00 00:00:00' === $post->post_date_gmt ) {
+		return $open;
+	}
+
 	if ( time() - strtotime( $post->post_date_gmt ) > ( $days_old * DAY_IN_SECONDS ) )
 		return false;
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-beta2-35474';
+$wp_version = '4.4-beta2-35475';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.