From 6e044f36077957dcdb4e0ac181b3bc037cbbb7b4 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Sat, 12 Jan 2013 10:55:18 -0800
Subject: [PATCH] Store flag on _parentWays itself, fixes #392

Relying here on the fact that `calculated` will never
collide with an actual entity ID.
---
 js/id/graph/graph.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/id/graph/graph.js b/js/id/graph/graph.js
index cf3ed96f8..37f430c0f 100644
--- a/js/id/graph/graph.js
+++ b/js/id/graph/graph.js
@@ -41,7 +41,7 @@ iD.Graph.prototype = {
             ent,
             id;
 
-        if (!graph.calculatedParentWays) {
+        if (!this._parentWays.calculated) {
             for (var i in graph.entities) {
                 ent = graph.entities[i];
                 if (ent && ent.type === 'way') {
@@ -54,7 +54,7 @@ iD.Graph.prototype = {
                     }
                 }
             }
-            graph.calculatedParentWays = true;
+            this._parentWays.calculated = true;
         }
 
         return this._parentWays[entity.id] || [];