Backport !2078 “gthreadedresolver: don't ignore flags in lookup_by_name_with_flags” to glib-2-68
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.
Trivial backport of !2078 (merged) to glib-2-68
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