alias: add support for aliases of an alias

diff --git a/list-objects-filter.h b/list-objects-filter.h
index a963d0274ceb1ea80c9b4ba2003dfb4dd0226116..a6f6b4990b43c8f4c8cb94ba5b890370287ec868 100644 (file)
--- a/list-objects-filter.h
+++ b/list-objects-filter.h
@@ -1,6 +1,10 @@
 #ifndef LIST_OBJECTS_FILTER_H
 #define LIST_OBJECTS_FILTER_H
 
+struct list_objects_filter_options;
+struct object;
+struct oidset;
+
 /*
  * During list-object traversal we allow certain objects to be
  * filtered (omitted) from the result.  The active filter uses