merge: release strbuf after use in write_merge_heads()

diff --git a/transport-helper.c b/transport-helper.c
index 33cff38cc0b9b4a2d05b26544c9edda9caa33e9a..8f68d69a86bd919162b62514af0b1d1d55e204a1 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -927,7 +927,7 @@ static int push_refs_with_export(struct transport *transport,
                struct object_id oid;
 
                private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name);
-               if (private && !get_sha1(private, oid.hash)) {
+               if (private && !get_oid(private, &oid)) {
                        strbuf_addf(&buf, "^%s", private);
                        string_list_append(&revlist_args, strbuf_detach(&buf, NULL));
                        oidcpy(&ref->old_oid, &oid);