Resolve needless_continue pedantic clippy lint

    warning: this `continue` expression is redundant
        --> src/expr.rs:2246:21
         |
    2246 |                     continue;
         |                     ^^^^^^^^
         |
         = help: consider dropping the `continue` expression
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_continue
         = note: `-W clippy::needless-continue` implied by `-W clippy::pedantic`
         = help: to override `-W clippy::pedantic` add `#[allow(clippy::needless_continue)]`

Author: dtolnay

src/expr.rs

@@ -2243,7 +2243,6 @@ pub(crate) mod parsing {
                 if lookahead.peek(Token![if]) {
                     expr.else_branch = Some((else_token, Box::new(Expr::PLACEHOLDER)));
                     clauses.push(expr);
-                    continue;
                 } else if lookahead.peek(token::Brace) {
                     expr.else_branch = Some((
                         else_token,