Coding Standards: Use strict comparison in `wp-includes/feed-atom-comments.php`.

Follow-up to [9818].

Props aristath, poena, afercia, SergeyBiryukov.
See #58831.
Built from https://develop.svn.wordpress.org/trunk@56324


git-svn-id: http://core.svn.wordpress.org/trunk@55836 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/feed-atom-comments.php

@@ -111,7 +111,7 @@ while ( have_comments() ) :
 
 		<?php
 		// Return comment threading information (https://www.ietf.org/rfc/rfc4685.txt).
-		if ( 0 == $comment->comment_parent ) : // This comment is top-level.
+		if ( '0' === $comment->comment_parent ) : // This comment is top-level.
 			?>
 			<thr:in-reply-to ref="<?php the_guid(); ?>" href="<?php the_permalink_rss(); ?>" type="<?php bloginfo_rss( 'html_type' ); ?>" />
 			<?php

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56323';
+$wp_version = '6.4-alpha-56324';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.