Fix Orphaned users using script

/*************************************************************************************
This procedure should be created in the Master database. This procedure takes no
parameters. It will remap orphaned users in the current database to EXISTING logins
of the same name. This is usefull in the case a new database is created by restoring
a backup to a new database, or by attaching the datafiles to a new server.
*************************************************************************************/

IF OBJECT_ID('dbo.sp_fixusers') IS NOT NULL
BEGIN
DROP PROCEDURE dbo.sp_fixusers
IF OBJECT_ID('dbo.sp_fixusers') IS NOT NULL
PRINT '<<< FAILED DROPPING PROCEDURE dbo.sp_fixusers >>>'
ELSE
PRINT '<<< DROPPED PROCEDURE dbo.sp_fixusers >>>'
END
GO
CREATE PROCEDURE dbo.sp_fixusers
AS
BEGIN
DECLARE @username varchar(25)
DECLARE fixusers CURSOR
FOR
SELECT UserName = name FROM sysusers
WHERE issqluser = 1 and (sid is not null and sid <> 0x0)
and suser_sname(sid) is null
ORDER BY name
OPEN fixusers
FETCH NEXT FROM fixusers
INTO @username
WHILE @@FETCH_STATUS = 0
BEGIN
EXEC sp_change_users_login 'update_one', @username, @username
FETCH NEXT FROM fixusers
INTO @username
END

CLOSE fixusers
DEALLOCATE fixusers
END
go
IF OBJECT_ID('dbo.sp_fixusers') IS NOT NULL
PRINT '<<< CREATED PROCEDURE dbo.sp_fixusers >>>'
ELSE
PRINT '<<< FAILED CREATING PROCEDURE dbo.sp_fixusers >>>'
go