Re: [PATCH 10/15] hash: provide per-algorithm null OIDs

> diff --git a/object-file.c b/object-file.c
> index 5f1fa05c4e..50bb5b6ca4 100644
> --- a/object-file.c
> +++ b/object-file.c
> @@ -55,7 +55,6 @@
>  	"\x6f\xe1\x41\xf7\x74\x91\x20\xa3\x03\x72" \
>  	"\x18\x13"
>  
> -const struct object_id null_oid;
>  static const struct object_id empty_tree_oid = {
>  	EMPTY_TREE_SHA1_BIN_LITERAL,
>  	GIT_HASH_SHA1,
> @@ -64,6 +63,9 @@ static const struct object_id empty_blob_oid = {
>  	EMPTY_BLOB_SHA1_BIN_LITERAL,
>  	GIT_HASH_SHA1,
>  };
> +const struct object_id null_oid_sha1 = {
> +	{0}, GIT_HASH_SHA1,
> +};