E0268 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/E0268.rs

E0268 needs a span_label, updating it from:

error[E0268]: `break` outside of loop
  --> src/test/compile-fail/E0268.rs:12:5
   |
12 |     break; //~ ERROR E0268
   |     ^^^^^

To:

error[E0268]: `break` outside of loop
  --> src/test/compile-fail/E0268.rs:12:5
   |
12 |     break; //~ ERROR E0268
   |     ^^^^^ cannot break outside of a loop

[shyamsundarb-arch]

I will take this