[ci skip] DocBlocks for DB drivers' utility classes
Partially fixes issue #1295.
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
index 3bd77c8..31102c0 100644
--- a/system/database/DB_utility.php
+++ b/system/database/DB_utility.php
@@ -45,23 +45,30 @@
// --------------------------------------------------------------------
/**
+ * List databases statement
+ *
+ * @var string
+ */
+ $_list_databases = FALSE;
+
+ /**
* OPTIMIZE TABLE statement
*
- * @var string|bool
+ * @var string
*/
protected $_optimize_table = FALSE;
/**
* REPAIR TABLE statement
*
- * @var string|bool
+ * @var string
*/
protected $_repair_table = FALSE;
// --------------------------------------------------------------------
/**
- * Constructor
+ * Class constructor
*
* @return void
*/