DibiMsSql2005Driver: fixed identifier escaping

Annoted link to MS SQL doc does not talk about open bracket '[' escaping, only closing bracket ']'.

dibi::query('CREATE TABLE %n (id INT)', 'abc[]def');
 - old: creates table 'abc[[]def'
 - new: creates table 'abc[]def'

dibi/drivers/mssql2005.php

@@ -243,7 +243,7 @@ class DibiMsSql2005Driver extends DibiObject implements IDibiDriver, IDibiResult
 
 		case dibi::IDENTIFIER:
 			// @see http://msdn.microsoft.com/en-us/library/ms176027.aspx
-			return '[' . str_replace(array('[', ']'), array('[[', ']]'), $value) . ']';
+			return '[' . str_replace(']', ']]', $value) . ']';
 
 		case dibi::BOOL:
 			return $value ? 1 : 0;