Customize: Improve accuracy of message displayed when accessing Customizer with a changeset that is already published or trashed.

Amends [38810].
Props dlh.
Fixes #42497 for 4.9 branch.

Built from https://develop.svn.wordpress.org/branches/4.9@42535


git-svn-id: http://core.svn.wordpress.org/branches/4.9@42364 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/customize.php

@@ -77,7 +77,7 @@ if ( $wp_customize->changeset_post_id() ) {
 	if ( in_array( get_post_status( $changeset_post->ID ), array( 'publish', 'trash' ), true ) ) {
 		wp_die(
 			'<h1>' . __( 'Cheatin&#8217; uh?' ) . '</h1>' .
-			'<p>' . __( 'This changeset has already been published and cannot be further modified.' ) . '</p>' .
+			'<p>' . __( 'This changeset cannot be further modified.' ) . '</p>' .
 			'<p><a href="' . esc_url( remove_query_arg( 'changeset_uuid' ) ) . '">' . __( 'Customize New Changes' ) . '</a></p>',
 			403
 		);

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9.3-alpha-42534';
+$wp_version = '4.9.3-alpha-42535';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.