Rollup merge of #48778 - sinkuu:rls_crash_tuple_struct, r=nrc

Fix save-analysis generation crash with invalid tuple access

Reproduction:

```rust
fn invalid_tuple_struct_accessing() {
    bar.0;
}
```
```
error[E0425]: cannot find value `bar` in this scope
 --> test.rs:2:5
  |
2 |     bar.0;
  |     ^^^ not found in this scope

error[E0601]: main function not found

error: internal compiler error: librustc_save_analysis/dump_visitor.rs:1678: Expected struct or tuple type, found TyError
 --> test.rs:2:5
  |
2 |     bar.0;
  |     ^^^^^

thread 'rustc' panicked at 'Box<Any>', librustc_errors/lib.rs:482:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.
```

This should fix a crash in RLS when editing such code. cc @nrc

0 files changed, 0 insertions, 0 deletions