field_reassign_with_default should not expand macros in suggestion

[matthiaskrgr]

Code like this (notice the vec![] macro)

#[derive(Default)]
struct S {
    n: i32,
    v: Vec<String>,
    s: String,
}

pub fn main() {
    let mut s = S::default();
    s.s = String::from("hello world");
    s.v = vec![String::from("a"), 'b'.into()];
}

gets expanded in the suggestion, this should not happen I believe.

    Checking x v0.1.0 (/tmp/x)
warning: field is never read: `n`
 --> src/main.rs:3:5
  |
3 |     n: i32,
  |     ^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: field assignment outside of initializer for an instance created with Default::default()
  --> src/main.rs:10:5
   |
10 |     s.s = String::from("hello world");
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(clippy::field_reassign_with_default)]` on by default
note: consider initializing the variable with `S { s: String::from("hello world"), v: <[_]>::into_vec(box [$($x),+]), ..Default::default() }` and removing relevant reassignments
  --> src/main.rs:9:5
   |
9  |     let mut s = S::default();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#field_reassign_with_default

warning: 2 warnings emitted

    Finished dev [unoptimized + debuginfo] target(s) in 0.09s
 

clippy 0.0.212 (0d8a27a6f 2020-12-28)