infallible_destructuring_match misses ref in suggested fix

I am using `clippy 0.1.55 (88539999 2021-07-06)`.

The suggestion given for:
```
let t1 = match type_section.types()[1] {
   Type::Function(ref func_type) => func_type
};
```
is:
```
let Type::Function(t1) = type_section.types()[1];
```

it should actually include the `ref`:
```
let Type::Function(ref t1) = type_section.types()[1];
```
