if_chain! {
if let Some(higher::If { cond, then, r#else }) = higher::If::hir(expr);
if !is_else_clause(cx.tcx, expr);
- if let ExprKind::MethodCall(segment, args, _) = &cond.kind;
- if let Some(caller) = args.get(0);
+ if let ExprKind::MethodCall(segment, [caller, ..], _) = &cond.kind;
let caller_ty = cx.typeck_results().expr_ty(caller);
let if_block = IfBlockType::IfIs(caller, caller_ty, segment.ident.name, then, r#else);
if is_early_return(sym::Option, cx, &if_block) || is_early_return(sym::Result, cx, &if_block);