Role display fix from Owen. fixes #2338

git-svn-id: https://develop.svn.wordpress.org/trunk@3483 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/users.php

@@ -149,7 +149,7 @@ default:
 	foreach($userids as $userid) {
 		$tmp_user = new WP_User($userid);
 		$roles = $tmp_user->roles;
-		$role = $roles[0];
+		$role = array_shift($roles);
 		$roleclasses[$role][$tmp_user->user_login] = $tmp_user;
 	}