message: fix argument order on check_align
diff: @@ -410,7 +410,7 @@ impl<'a, 'tcx> EvalContext<'a, 'tcx> {
  let size = self.type_size(ty)?.expect("write_bytes() type must be sized");
  let ptr = arg_vals[0].read_ptr(&self.memory)?;
  let count = self.value_to_primval(arg_vals[2], usize)?.to_u64()?;
  - self.memory.check_align(ptr, size * count, ty_align)?;
  + self.memory.check_align(ptr, ty_align, size * count)?;
  self.memory.write_repeat(ptr, val_byte, size * count)?;
  }
  