DB/Schema/Auth: Also change battlenet_accounts.os to varchar(4)

Ref 59bb9c20f3

sql/base/auth_database.sql

@@ -216,7 +216,7 @@ CREATE TABLE `battlenet_accounts` (
   `last_login` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
   `online` tinyint(3) unsigned NOT NULL DEFAULT '0',
   `locale` tinyint(3) unsigned NOT NULL DEFAULT '0',
-  `os` varchar(3) NOT NULL DEFAULT '',
+  `os` varchar(4) NOT NULL DEFAULT '',
   `LastCharacterUndelete` int(10) unsigned NOT NULL DEFAULT '0',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 COMMENT='Account System';

sql/updates/auth/2014_11_25_00_auth.sql

@@ -0,0 +1 @@
+ALTER TABLE `battlenet_accounts` CHANGE `os` `os` VARCHAR(4) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT  '';