In `get_sample_permalink()`, override 'future' status before generating permalink.

In [31114], `get_permalink()` was modified to prevent pretty permalinks from
being generated for posts with the 'future' post status. This inadvertently
broke the pretty permalink preview for scheduled posts. The fix is to include
the 'future' status in the list of statuses that `get_sample_permalink()` fakes
as 'publish' before it fetches a permalink.

Props DrewAPicture.
Fixes #30910.
Built from https://develop.svn.wordpress.org/trunk@31323


git-svn-id: http://core.svn.wordpress.org/trunk@31304 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/post.php

@@ -1152,7 +1152,7 @@ function get_sample_permalink($id, $title = null, $name = null) {
 	$original_name = $post->post_name;
 
 	// Hack: get_permalink() would return ugly permalink for drafts, so we will fake that our post is published.
-	if ( in_array( $post->post_status, array( 'draft', 'pending' ) ) ) {
+	if ( in_array( $post->post_status, array( 'draft', 'pending', 'future' ) ) ) {
 		$post->post_status = 'publish';
 		$post->post_name = sanitize_title($post->post_name ? $post->post_name : $post->post_title, $post->ID);
 	}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31322';
+$wp_version = '4.2-alpha-31323';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.