fix error code in got_object_blob_open()
diff --git a/lib/object.c b/lib/object.c
index 6a88075..cbbdbbd 100644
--- a/lib/object.c
+++ b/lib/object.c
@@ -1135,7 +1135,7 @@ got_object_blob_open(struct got_blob_object **blob,
goto done;
if (size != obj->hdrlen + obj->size) {
- err = got_error(GOT_ERR_BAD_OBJ_HDR);
+ err = got_error(GOT_ERR_PRIVSEP_LEN);
close(outfd);
goto done;
}