Fix a comment typo
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index eb6ab74..113c3d3 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -74,7 +74,7 @@
 	protected $_protect_identifiers	= TRUE;
 	protected $_reserved_identifiers	= array('*'); // Identifiers that should NOT be escaped
 
-	// These are use with Oracle
+	// These are used with Oracle
 	public $stmt_id;
 	public $curs_id;
 	public $limit_used;