Auto merge of #10979 - y21:issue9909, r=giraffate

[`get_unwrap`]: include a borrow in the suggestion if argument is not an integer literal

Fixes #9909

I have to say, I don't really understand what the previous logic was trying to do, but this fixes the linked bug.
It was checking if the argument passed to `.get()` can be parsed as a usize (i.e. if it's an integer literal, probably?), and if not, it wouldn't include a borrow? I don't know how we came to that conclusion, but that logic doesn't work:
```rs
let slice = &[1, 2];
let _r: &i32 = slice.get({ 1 }).unwrap();
// previous suggestion: slice[{ 1 }]
// the suggestion should be: &slice[{ 1 }]
```
Here the argument passed to it isn't an integer literal, but it should still include a borrow, because it would otherwise change the type from `&i32` to `i32`.

The exception is that if the parent of the `get().unwrap()` expr is a dereference or a method call or the like, we don't need an explicit borrow because it's automatically inserted by the compiler

changelog: [`get_unwrap`]: include a borrow in the suggestion if argument is not an integer literal

0 files changed, 0 insertions, 0 deletions