FavoritesMenu: don't call the RefFilter when the model's node is NULL. Fixes bug #5871.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36772 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/tracker/FavoritesMenu.cpp

@@ -298,7 +298,7 @@ FavoritesMenu::ShouldShowModel(const Model *model)
 	if (fIsSavePanel && model->IsFile())
 		return false;
 
-	if (!fRefFilter)
+	if (!fRefFilter || model->Node() == NULL)
 		return true;
 	
 	struct stat_beos statBeOS;