Ticket #53284: 53284.diff

src/wp-admin/includes/class-wp-automatic-updater.php

@@ -418 +418 @@
                                 return false;
                         }
 
-                        // Core doesn't output this, so let's append it so we don't get confused.
+                        // Core doesn't output this, so let's append it, so we don't get confused.
                         if ( is_wp_error( $upgrade_result ) ) {
-                                $skin->error( __( 'Installation failed.' ), $upgrade_result );
+                                $skin->error( $upgrade_result );
                         } else {
                                 $skin->feedback( __( 'WordPress updated successfully.' ) );
                         }