Silence use of deprecated type alias warning warnings

[bzEq]

Silence warnings on AIX

warning: use of deprecated type alias `fixed_width_ints::int64_t`: Use i64 instead.
  --> src/unix/aix/mod.rs:20:23
   |
20 | pub type time64_t = ::int64_t;
   |                       ^^^^^^^
   |
   = note: `#[warn(deprecated)]` on by default

warning: use of deprecated type alias `fixed_width_ints::uint32_t`: Use u32 instead.
  --> src/unix/aix/mod.rs:28:27
   |
28 | pub type sctp_assoc_t = ::uint32_t;
   |                           ^^^^^^^^

[rustbot]

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