Coding Standards: Correct default values in WP_Post to match the documented type.

Follow-up to [22264], [25086].

See #62279.

git-svn-id: https://develop.svn.wordpress.org/trunk@59816 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/class-wp-post.php

@@ -37,7 +37,7 @@ final class WP_Post {
 	 * @since 3.5.0
 	 * @var string
 	 */
-	public $post_author = 0;
+	public $post_author = '0';
 
 	/**
 	 * The post's local publication time.
@@ -207,7 +207,7 @@ final class WP_Post {
 	 * @since 3.5.0
 	 * @var string
 	 */
-	public $comment_count = 0;
+	public $comment_count = '0';
 
 	/**
 	 * Stores the post object's sanitization level.