object: add repository argument to grow_object_hash

Add a repository argument to allow the caller of grow_object_hash to
be more specific about which repository to handle. This is a small
mechanical change; it doesn't change the implementation to handle
repositories other than the_repository yet.
Signed-off-by: NJonathan Nieder <jrnieder@gmail.com>
Signed-off-by: NStefan Beller <sbeller@google.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

object.c

@@ -116,7 +116,8 @@ struct object *lookup_object(const unsigned char *sha1)
  * power of 2 (but at least 32).  Copy the existing values to the new
  * hash map.
  */
-static void grow_object_hash(void)
+#define grow_object_hash(r) grow_object_hash_##r()
+static void grow_object_hash_the_repository(void)
 {
 	int i;
 	/*
@@ -147,7 +148,7 @@ void *create_object_the_repository(const unsigned char *sha1, void *o)
 	hashcpy(obj->oid.hash, sha1);
 
 	if (the_repository->parsed_objects->obj_hash_size - 1 <= the_repository->parsed_objects->nr_objs * 2)
-		grow_object_hash();
+		grow_object_hash(the_repository);
 
 	insert_obj_hash(obj, the_repository->parsed_objects->obj_hash,
 			the_repository->parsed_objects->obj_hash_size);