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Address small nit

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This commit is contained in:
mcarton 2016-02-14 12:07:56 +01:00
parent 4562040d6b
commit cbe2de7fd2
1 changed files with 2 additions and 2 deletions
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4
src/loops.rs
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@ -9,7 +9,7 @@ use rustc::middle::ty;
use rustc_front::hir::*;
use rustc_front::intravisit::{Visitor, walk_expr, walk_block, walk_decl};
use std::borrow::Cow;
use std::collections::{HashSet, HashMap};
use std::collections::HashMap;
use utils::{snippet, span_lint, get_parent_expr, match_trait_method, match_type, in_external_macro, expr_block,
span_help_and_lint, is_integer_literal, get_enclosing_block, span_lint_and_then, walk_ptrs_ty};
@ -353,7 +353,7 @@ fn check_for_loop_range(cx: &LateContext, pat: &Pat, arg: &Expr, body: &Expr, ex
let (indexed, indexed_extent) = visitor.indexed
.into_iter()
.next()
.expect("Len was nonzero, but no contents found");
.unwrap_or_else(|| unreachable!() /* len == 1 */);
// ensure that the indexed variable was declared before the loop, see #601
let pat_extent = cx.tcx.region_maps.var_scope(pat.id);