Fix compile error from library change

Author: JarredAllen

CHANGELOG.md

@@ -1491,6 +1491,7 @@ Released 2018-09-13
 [`large_stack_arrays`]: https://rust-lang.github.io/rust-clippy/master/index.html#large_stack_arrays
 [`len_without_is_empty`]: https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
 [`len_zero`]: https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
+[`let_and_return`]: https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
 [`let_underscore_lock`]: https://rust-lang.github.io/rust-clippy/master/index.html#let_underscore_lock
 [`let_underscore_must_use`]: https://rust-lang.github.io/rust-clippy/master/index.html#let_underscore_must_use
 [`let_unit_value`]: https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value

clippy_lints/src/option_if_let_else.rs

@@ -71,7 +71,7 @@ declare_lint_pass!(OptionIfLetElse => [OPTION_IF_LET_ELSE]);
 
 /// Returns true iff the given expression is the result of calling `Result::ok`
 fn is_result_ok(cx: &LateContext<'_, '_>, expr: &'_ Expr<'_>) -> bool {
-    if let ExprKind::MethodCall(ref path, _, &[ref receiver]) = &expr.kind {
+    if let ExprKind::MethodCall(ref path, _, &[ref receiver], _) = &expr.kind {
         path.ident.name.to_ident_string() == "ok" && match_type(cx, &cx.tables.expr_ty(&receiver), &paths::RESULT)
     } else {
         false