Account for multiple trait bounds in bare trait object suggestion

Note the parentheses in the last suggestion:

```
error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time
  --> $DIR/not-on-bare-trait.rs:7:8
   |
LL | fn foo(_x: Foo + Send) {
   |        ^^ doesn't have a size known at compile-time
   |
   = help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)`
   = help: unsized fn params are gated as an unstable feature
help: you can use `impl Trait` as the argument type
   |
LL | fn foo(_x: impl Foo + Send) {
   |            ++++
help: function arguments must have a statically known size, borrowed types always have a known size
   |
LL | fn foo(_x: &(Foo + Send)) {
   |            ++          +
```

0 files changed, 0 insertions, 0 deletions