E0459 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/E0459.rs

E0459 needs a span_label, updating it from:

error[E0459]: #[link(...)] specified without `name = "foo"`
  --> src/test/compile-fail/E0459.rs:11:1
   |
11 | #[link(kind = "dylib")] extern {} //~ ERROR E0459
   | ^^^^^^^^^^^^^^^^^^^^^^^

To:

error[E0459]: #[link(...)] specified without `name = "foo"`
  --> src/test/compile-fail/E0459.rs:11:1
   |
11 | #[link(kind = "dylib")] extern {} //~ ERROR E0459
   | ^^^^^^^^^^^^^^^^^^^^^^^ missing `name` argument