Posts, Post Types: Ensure that all post stati are countable in `wp_count_posts`.

When `wp_count_posts()` is cached, it does so with all statuses defaulted to 0. The problem is however, if this is called before all plugins have registered their desired statuses, they won't have that default.

Fixes #49685.

Props obliviousharmony, SergeyBiryukov.


Built from https://develop.svn.wordpress.org/trunk@48497


git-svn-id: http://core.svn.wordpress.org/trunk@48259 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/post.php

@@ -2647,6 +2647,13 @@ function wp_count_posts( $type = 'post', $perm = '' ) {
 
 	$counts = wp_cache_get( $cache_key, 'counts' );
 	if ( false !== $counts ) {
+		// We may have cached this before every status was registered.
+		foreach ( get_post_stati() as $status ) {
+			if ( ! isset( $counts->{$status} ) ) {
+				$counts->{$status} = 0;
+			}
+		}
+
 		/** This filter is documented in wp-includes/post.php */
 		return apply_filters( 'wp_count_posts', $counts, $type, $perm );
 	}

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-beta2-48496';
+$wp_version = '5.5-beta2-48497';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.