9e2a6a29ce
abort_internal is safe `sys::abort_internal` is stably exposed as a safe function. Forward that assumption "inwards" to the `sys` module by making the function itself safe, too. This corresponds to what https://github.com/rust-lang/rust/pull/72204 did for the intrinsic. We should probably wait until that lands because some of the intrinsic calls in this PR might then need adjustments.