Coding Standards: Rewrite an empty conditional in get_post_status().

Expand the comment to further clarify the post object check performed.

Follow-up to [58174].

See #59283.

git-svn-id: https://develop.svn.wordpress.org/trunk@58175 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/post.php

@@ -1219,9 +1219,8 @@ function get_post_mime_type( $post = null ) {
  * @return string|false Post status on success, false on failure.
  */
 function get_post_status( $post = null ) {
-	if ( $post instanceof WP_Post && isset( $post->filter ) && 'sample' === $post->filter ) {
-		// Skip normalization
-	} else {
+	// Normalize the post object if necessary, skip normalization if called from get_sample_permalink().
+	if ( ! $post instanceof WP_Post || ! isset( $post->filter ) || 'sample' !== $post->filter ) {
 		$post = get_post( $post );
 	}