use more destructuring in redundant_locals

Author: max-niederman

clippy_lints/src/redundant_locals.rs

@@ -50,8 +50,8 @@ impl<'tcx> LateLintPass<'tcx> for RedundantLocals {
             if let Some(expr) = local.init;
             if let ExprKind::Path(qpath @ QPath::Resolved(None, path)) = expr.kind;
             // the path is a single segment equal to the local's name
-            if path.segments.len() == 1;
-            if path.segments[0].ident == ident;
+            if let [last_segment] = path.segments;
+            if last_segment.ident == ident;
             // resolve the path to its defining binding pattern
             if let Res::Local(binding_id) = cx.qpath_res(&qpath, expr.hir_id);
             if let Node::Pat(binding_pat) = cx.tcx.hir().get(binding_id);