When updating a user, invalidate its 'userslugs' cache.

`user_nicename` can be changed via `wp_update_user()`, so we invalidate just
to be safe.

Props thebrandonallen.
Fixes #35750.
Built from https://develop.svn.wordpress.org/trunk@36482


git-svn-id: http://core.svn.wordpress.org/trunk@36449 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/user.php

@@ -1682,6 +1682,7 @@ function wp_update_user($userdata) {
 	}
 
 	wp_cache_delete( $user['user_email'], 'useremail' );
+	wp_cache_delete( $user['user_nicename'], 'userslugs' );
 
 	// Merge old and new fields with new fields overwriting old ones.
 	$userdata = array_merge( $user, $userdata );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36481';
+$wp_version = '4.5-alpha-36482';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.