fix SQlite3 list_fields
diff --git a/system/database/drivers/sqlite3/sqlite3_driver.php b/system/database/drivers/sqlite3/sqlite3_driver.php
index a7c6420..31e37de 100644
--- a/system/database/drivers/sqlite3/sqlite3_driver.php
+++ b/system/database/drivers/sqlite3/sqlite3_driver.php
@@ -266,7 +266,7 @@
 		}
 
 		$this->data_cache['field_names'][$table] = array();
-		foreach ($result as $row)
+		foreach ($result->result_array() as $row)
 		{
 			$this->data_cache['field_names'][$table][] = $row['name'];
 		}