Fixed diagnostics

[KalitaAlexey]

For the code:

struct Foo {}

fn bar(foo: Foo) {}

fn main() {
    let foo = Foo {};
    bar(foo);
    bar(foo);
}

It gave:

E0382: use of moved value: `foo`

Now it gives:

E0382: use of moved value: `foo`
  label: value used here after move
  note: move occurs because `foo` has type `Foo`, which does not implement the `Copy` trait

Fixes #81