Update ziggurat.zig to use `random.int(u64)`

Ziggurat rng was using deprecated `random.scalar(u64)` which was causing compile errors on calls to public facing stdlib APIs (randExp) on 0.6+, this fixed those errors.
e073c8a2b1Charles Shenton committed on 4/18/2020, 6:39:36 PM· committed by Andrew Kelleyparent6b2274f
1 file changedLine totals unavailable