dir: use the_hash_algo for empty blob object ID

To ensure that we are hash algorithm agnostic, use the_hash_algo to look
up the object ID for the empty blob instead of using the empty_tree_oid
variable.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/dir.c b/dir.c
index 06f4c4a8bf4647b88908900c7a2d29b3140545fb..e879c34c2ea365d30a32fe3595d232d014cdb5ba 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -828,7 +828,7 @@ static int add_excludes(const char *fname, const char *base, int baselen,
                if (size == 0) {
                        if (oid_stat) {
                                fill_stat_data(&oid_stat->stat, &st);
-                               oidcpy(&oid_stat->oid, &empty_blob_oid);
+                               oidcpy(&oid_stat->oid, the_hash_algo->empty_blob);
                                oid_stat->valid = 1;
                        }
                        close(fd);