Coding Standards: Use strict comparison in wp_xmlrpc_server::mw_newPost().

Follow-up to [5281].

Props aristath, poena, afercia, SergeyBiryukov.
See #62279.

git-svn-id: https://develop.svn.wordpress.org/trunk@59713 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/class-wp-xmlrpc-server.php

@@ -5457,8 +5457,8 @@ public function mw_newPost( $args ) {
 
 		$post_author = $user->ID;
 
-		// If an author id was provided then use it instead.
-		if ( isset( $content_struct['wp_author_id'] ) && ( $user->ID != $content_struct['wp_author_id'] ) ) {
+		// If an author ID was provided then use it instead.
+		if ( isset( $content_struct['wp_author_id'] ) && ( $user->ID !== (int) $content_struct['wp_author_id'] ) ) {
 			switch ( $post_type ) {
 				case 'post':
 					if ( ! current_user_can( 'edit_others_posts' ) ) {