Lint to replace assignments in both if/then branches with a single one

[leonardo-m]

What it does

Suggests to replace two assignments in if/then with one.
This too comes from code I've found in the wild, that here I've reduced.

Advantage

DRYer code. Possibly a bit shorter code.

Drawbacks

If done well I think there are no drawbacks.

Example

#![warn(clippy::all)]
#![warn(clippy::nursery)]
#![warn(clippy::pedantic)]

pub const fn foo1(a: &mut u32, b: bool) {
    if b {
        *a = 1;
    } else {
        *a = 2;
    }
}

fn main() {}

Could be written as:

pub const fn foo2(a: &mut u32, b: bool) {
    *a = if b { 1 } else { 2 };
}