Fix Flatten
signature parts to be null-oblivious
#847
Merged
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This PR adds to #803. If fixes parts of
Flatten
to be null-oblivious. SinceIEnumerator.Current
is null-oblivious, the right call here seems to be to mark theobject
parameter ofIEnumerable<>
andFunc<,>
to be null-oblivious too (rather thanobject?
).