refs.c: make get_main_ref_store() public and use it

get_ref_store() will soon be renamed to get_submodule_ref_store().
Together with future get_worktree_ref_store(), the three functions
provide an appropriate ref store for different operation modes. New APIs
will be added to operate directly on ref stores.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/refs.h b/refs.h
index 2d6b6263f..a6cd12267 100644
--- a/refs.h
+++ b/refs.h
@@ -2,6 +2,7 @@
 #define REFS_H
 
 struct object_id;
+struct ref_store;
 struct strbuf;
 struct string_list;
 
@@ -560,4 +561,6 @@ int reflog_expire(const char *refname, const unsigned char *sha1,
 
 int ref_storage_backend_exists(const char *name);
 
+struct ref_store *get_main_ref_store(void);
+
 #endif /* REFS_H */