Auto merge of #12473 - Kobzol:assigning-clones-deref, r=Alexendoo

Fix handling of `Deref` in `assigning_clones`

The `assigning_clones` lint had a special case for producing a bit nicer code for mutable references:
```rust
fn clone_function_lhs_mut_ref(mut_thing: &mut HasCloneFrom, ref_thing: &HasCloneFrom) {
    *mut_thing = Clone::clone(ref_thing);
}
//v
fn clone_function_lhs_mut_ref(mut_thing: &mut HasCloneFrom, ref_thing: &HasCloneFrom) {
    Clone::clone_from(mut_thing, ref_thing);
}
```
However, this could [break](https://github.com/rust-lang/rust-clippy/issues/12437) when combined with `Deref`.

This PR removes the special case, so that the generated code should work more generally. Later we can improve the detection of `Deref` and put the special case back in a way that does not break code.

Fixes: https://github.com/rust-lang/rust-clippy/issues/12437

r? `@blyxyas`

changelog: [`assigning_clones`]: change applicability to `Unspecified` and fix a problem with `Deref`.

0 files changed, 0 insertions, 0 deletions