ices/52334.sh: fixed with no errors

[github-actions]

Issue: rust-lang/rust#52334

#!/bin/sh

rustc -Z mir-opt-level=0 - << EOF
type Foo = extern "C" fn(::std::ffi::CStr);
extern "C" {
    fn meh(blah: Foo);
}

fn main() {
    meh as usize;
}
EOF

=== stdout ===
=== stderr ===
warning: `extern` fn uses type `CStr`, which is not FFI-safe
 --> <anon>:1:12
  |
1 | type Foo = extern "C" fn(::std::ffi::CStr);
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
  |
  = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
  = note: this struct has unspecified layout
  = note: `#[warn(improper_ctypes_definitions)]` on by default

warning: `extern` block uses type `CStr`, which is not FFI-safe
 --> <anon>:3:18
  |
3 |     fn meh(blah: Foo);
  |                  ^^^ not FFI-safe
  |
  = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
  = note: this struct has unspecified layout
  = note: `#[warn(improper_ctypes)]` on by default

warning: 2 warnings emitted

==============