package.loader: Fix type warning with swh.core > 0.2.0
The next version of swh.core will allow mypy to detect the return type of origin_visit_add is Iterable.
Migrated from D3655 (view on Phabricator)
Staging instance, all changes can be removed at any time
The next version of swh.core will allow mypy to detect the return type of origin_visit_add is Iterable.
Migrated from D3655 (view on Phabricator)