refs/packed-backend.h: add missing declaration (hdr-check)

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs/packed-backend.h b/refs/packed-backend.h
index 640245d3b9f23a8ae7866dd477a5ed9bbfc71cde..a01a0aff9c77280d7b3e605230af822fdab24ca9 100644 (file)
--- a/refs/packed-backend.h
+++ b/refs/packed-backend.h
@@ -1,6 +1,8 @@
 #ifndef REFS_PACKED_BACKEND_H
 #define REFS_PACKED_BACKEND_H
 
+struct ref_transaction;
+
 /*
  * Support for storing references in a `packed-refs` file.
  *