Ignore bool_to_int_with_if clippy lint
Ignore bool_to_int_with_if clippy lint

    error: boolean to int conversion using if
      --> src/punctuated.rs:81:28
       |
    81 |         self.inner.len() + if self.last.is_some() { 1 } else { 0 }
       |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with from: `usize::from(self.last.is_some())`
       |
       = note: `-D clippy::bool-to-int-with-if` implied by `-D clippy::all`
       = note: `self.last.is_some() as usize` or `self.last.is_some().into()` can also be valid options
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_to_int_with_if

dtolnay/syn