refs API: make refs_rename_ref_available() static

Move the refs_rename_ref_available() function into
"refs/files-backend.c". It is file-backend specific.

This function was added in 5fe7d825da8 (refs.c: pass a list of names
to skip to is_refname_available, 2014-05-01) as rename_ref_available()
and was only ever used in this one file-backend specific codepath. So
let's move it there.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 19 deletions

diff --git a/refs.c b/refs.c
index bb09993..44ddbb1 100644
--- a/refs.c
+++ b/refs.c
@@ -1372,25 +1372,6 @@ const char *find_descendant_ref(const char *dirname,
 	return NULL;
 }
 
-int refs_rename_ref_available(struct ref_store *refs,
-			      const char *old_refname,
-			      const char *new_refname)
-{
-	struct string_list skip = STRING_LIST_INIT_NODUP;
-	struct strbuf err = STRBUF_INIT;
-	int ok;
-
-	string_list_insert(&skip, old_refname);
-	ok = !refs_verify_refname_available(refs, new_refname,
-					    NULL, &skip, &err);
-	if (!ok)
-		error("%s", err.buf);
-
-	string_list_clear(&skip, 0);
-	strbuf_release(&err);
-	return ok;
-}
-
 int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
 {
 	struct object_id oid;