message: add GetFileType stub
diff: @@ -425,6 +425,13 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
  // Just make it fail.
  this.write_null(dest)?;
  }
  + "GetFileType" if this.frame_in_std() => {
  + #[allow(non_snake_case)]
  + let [_hFile] =
  + this.check_shim(abi, Abi::System { unwind: false }, link_name, args)?;
  + // Return unknown file type.
  + this.write_null(dest)?;
  + }
  "AddVectoredExceptionHandler" if this.frame_in_std() => {
  #[allow(non_snake_case)]
  let [_First, _Handler] =
  