delta-islands.h: add missing forward declarations (hdr-check)

diff --git a/midx.h b/midx.h
index a210f1af2af6bd7c7dc2210ac4b5ca398c8c60d1..622ddac47224625ca8ceee2fa28c90ffca6ef830 100644 (file)
--- a/midx.h
+++ b/midx.h
@@ -3,6 +3,9 @@
 
 #include "repository.h"
 
+struct object_id;
+struct pack_entry;
+
 struct multi_pack_index {
        struct multi_pack_index *next;