gthreadedresolver: don't ignore flags in lookup_by_name_with_flags
This fixes a bug where the family flag was ignored in lookup_data_new, causing the resolver to call getaddrinfo with no hints set when clearly the family hint should have been set.
This fixes a bug where the family flag was ignored in lookup_data_new, causing the resolver to call getaddrinfo with no hints set when clearly the family hint should have been set.