fixed errant syntax in changeset 53ace78c4b45, fixes #37
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index b3c625e..7a5eef0 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -857,7 +857,7 @@
 		
 		if ( ! isset($CI->security))
 		{
-			$CI->load('security');
+			$CI->load->library('security');
 		}
 		
 		return $CI->security->xss_clean($data, TRUE);