[PATCH 8/9] delta-islands.h: add missing forward declarations (hdr-check)

[Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxxx>]

Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxxx>
---
 delta-islands.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/delta-islands.h b/delta-islands.h
index f9725730f4..b635cd07d8 100644
--- a/delta-islands.h
+++ b/delta-islands.h
@@ -1,6 +1,10 @@
 #ifndef DELTA_ISLANDS_H
 #define DELTA_ISLANDS_H
 
+struct object_id;
+struct packing_data;
+struct commit;
+
 int island_delta_cmp(const struct object_id *a, const struct object_id *b);
 int in_same_island(const struct object_id *, const struct object_id *);
 void resolve_tree_islands(int progress, struct packing_data *to_pack);
-- 
2.19.0