From 67a24255754052bbd4b34a2e17f5b079461a379f Mon Sep 17 00:00:00 2001
From: desrosj <desrosj@git.wordpress.org>
Date: Mon, 20 May 2019 14:47:54 +0000
Subject: [PATCH] =?UTF-8?q?Feeds:=20Ensure=20a=20feed=E2=80=99s=20`<lastBu?=
 =?UTF-8?q?ildDate>`=20has=20the=20correct=20date.?=
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The maximum modified time for a is currently being determined after an arbitrary date format is applied. Because the string sort in `max()` is being used to return the highest (most recent) modified value, the incorrect date is sometimes returned. This was introduced in [45247].

Merges [45367] to the 5.2 branch.

Reviewed by desrosj, SergeyBiryukov.
Props onlanka, Rarst, mukesh27.
Fixes #47304.
Built from https://develop.svn.wordpress.org/branches/5.2@45368


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45179 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/feed.php    | 9 +--------
 wp-includes/version.php | 2 +-
 2 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/wp-includes/feed.php b/wp-includes/feed.php
index cba5d91a7c..ecb4a25293 100644
--- a/wp-includes/feed.php
+++ b/wp-includes/feed.php
@@ -672,14 +672,7 @@ function get_feed_build_date( $format ) {
 	}
 
 	// Determine the maximum modified time.
-	$max_modified_time = max(
-		array_map(
-			function ( $time ) use ( $format ) {
-				return mysql2date( $format, $time, false );
-			},
-			$modified_times
-		)
-	);
+	$max_modified_time = mysql2date( $format, max( $modified_times ), false );
 
 	/**
 	 * Filters the date the last post or comment in the query was modified.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1cb9c6ed10..0014662cfd 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2.1-RC1-45366';
+$wp_version = '5.2.1-RC1-45368';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.