From 3ab0f22ec6767d8b554b25914d321a4ef840d669 Mon Sep 17 00:00:00 2001
From: youknowriad <youknowriad@git.wordpress.org>
Date: Wed, 21 Nov 2018 19:30:48 +0000
Subject: [PATCH] Block Editor: Fix PHP warning showing up when loading editor
 styles while in RTL.

In RTL languages, WordPress adds style-editor-rtl.css editor styles to the global $editor_styles
This patch ignores handling these styles if the file is not preset.

Props desrosj, mostafa.s1990.
Fixes #45288.

Built from https://develop.svn.wordpress.org/branches/5.0@43923


git-svn-id: http://core.svn.wordpress.org/branches/5.0@43755 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/edit-form-blocks.php | 12 +++++++-----
 wp-includes/version.php       |  2 +-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/wp-admin/edit-form-blocks.php b/wp-admin/edit-form-blocks.php
index 74ec34c9f2..c81f40e5fd 100644
--- a/wp-admin/edit-form-blocks.php
+++ b/wp-admin/edit-form-blocks.php
@@ -197,11 +197,13 @@ if ( $editor_styles && current_theme_supports( 'editor-styles' ) ) {
 				);
 			}
 		} else {
-			$file     = get_theme_file_path( $style );
-			$styles[] = array(
-				'css'     => file_get_contents( get_theme_file_path( $style ) ),
-				'baseURL' => get_theme_file_uri( $style ),
-			);
+			$file = get_theme_file_path( $style );
+			if ( file_exists( $file ) ) {
+				$styles[] = array(
+					'css'     => file_get_contents( $file ),
+					'baseURL' => get_theme_file_uri( $style ),
+				);
+			}
 		}
 	}
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 0712cba814..3c6ce0884c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-beta5-43922';
+$wp_version = '5.0-beta5-43923';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.