Add db_set_charset() support for the mssql driver
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index faa1e26..d3e439d 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -298,6 +298,19 @@
// --------------------------------------------------------------------
/**
+ * Set client character set
+ *
+ * @param string $charset
+ * @return bool
+ */
+ protected function _db_set_charset($charset)
+ {
+ return (@ini_set('mssql.charset', $charset) !== FALSE);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Version number query string
*
* @return string