Rollup merge of #42368 - estebank:call-site, r=nikomatsakis

Use callsite's span for macro calls on suggestion

When suggesting an appropriate mutability for a macro call, use the call
span instead of the expanded macro's span.

```
error[E0308]: mismatched types
  --> $DIR/coerce-suggestions.rs:48:9
   |
48 |     s = format!("foo");
   |         ^^^^^^^^^^^^^^ expected mutable reference, found struct `std::string::String`
   |
   = note: expected type `&mut std::string::String`
              found type `std::string::String`
   = help: try with `&mut format!("foo")`
   = note: this error originates in a macro outside of the current crate
```
Fix #41858.

0 files changed, 0 insertions, 0 deletions