I18N: Don't use `get_user_option()` for retrieving user's language.

`get_user_option()` checks for both option types, site and network. Since `locale` is only a network option we can directly access the field via `WP_User`s magic getter.

Props johnjamesjacoby.
Fixes #38578.
Built from https://develop.svn.wordpress.org/trunk@39040


git-svn-id: http://core.svn.wordpress.org/trunk@38982 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/user-edit.php

@@ -281,9 +281,9 @@ if ( $languages ) : ?>
 	</th>
 	<td>
 		<?php
-		$user_locale = get_user_option( 'locale', $profileuser->ID );
+		$user_locale = $profileuser->locale;
 
-		if ( 'en_US' === $user_locale ) { // en_US
+		if ( 'en_US' === $user_locale ) {
 			$user_locale = false;
 		} elseif ( ! in_array( $user_locale, $languages, true ) ) {
 			$user_locale = get_locale();

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-beta1-39039';
+$wp_version = '4.7-beta1-39040';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.