Missing string representation, found by garrittg

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2135 dfc29bdd-3216-0410-991c-e03cc46cb475

include/IGUITable.h

@@ -66,6 +66,7 @@ namespace gui
 
 	const c8* const GUIOrderingModeNames[] =
 	{
+		"none",
 		"ascending",
 		"descending",
 		0