Fix DBForge index creation on MySQL and CUBRID
diff --git a/system/database/drivers/mysqli/mysqli_forge.php b/system/database/drivers/mysqli/mysqli_forge.php
index 294fc20..5a6560b 100644
--- a/system/database/drivers/mysqli/mysqli_forge.php
+++ b/system/database/drivers/mysqli/mysqli_forge.php
@@ -43,6 +43,16 @@
protected $_create_database = 'CREATE DATABASE %s CHARACTER SET %s COLLATE %s';
/**
+ * CREATE TABLE keys flag
+ *
+ * Whether table keys are created from within the
+ * CREATE TABLE statement.
+ *
+ * @var bool
+ */
+ protected $_create_table_keys = TRUE;
+
+ /**
* UNSIGNED support
*
* @var array