From 021afced82344b48fbbc36e029df4cbb7b2c02ae Mon Sep 17 00:00:00 2001
From: Felix Arntz <felix-arntz@leaves-and-love.net>
Date: Mon, 16 Oct 2017 22:54:57 +0000
Subject: [PATCH] Role/Capability: Prevent a fatal error when checking a
 language capability early or in the frontend.

The meta capabilities `install_languages` and `update_languages` rely on the admin function `wp_can_install_language_pack()`. That function in turn relies on `request_filesystem_credentials()`, so it needs to be ensured that this function is available as well.

Fixes #42230.

Built from https://develop.svn.wordpress.org/trunk@41885


git-svn-id: http://core.svn.wordpress.org/trunk@41719 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/capabilities.php | 4 ++++
 wp-includes/version.php      | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/wp-includes/capabilities.php b/wp-includes/capabilities.php
index 2279c16b62..e744175c9c 100644
--- a/wp-includes/capabilities.php
+++ b/wp-includes/capabilities.php
@@ -432,6 +432,10 @@ function map_meta_cap( $cap, $user_id ) {
 		break;
 	case 'install_languages':
 	case 'update_languages':
+		if ( ! function_exists( 'request_filesystem_credentials' ) ) {
+			require_once( ABSPATH . 'wp-admin/includes/file.php' );
+		}
+
 		if ( ! function_exists( 'wp_can_install_language_pack' ) ) {
 			require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3c2222f08e..1407a55aef 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-beta2-41884';
+$wp_version = '4.9-beta2-41885';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.