From e9033d8b0aa2cd151e32584ff2fb82ed64f9448b Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Fri, 11 Dec 2020 17:06:37 +0530
Subject: [PATCH] rule out double-callbacks when clearing cache

---
 www/common/outer/local-store.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/www/common/outer/local-store.js b/www/common/outer/local-store.js
index c6d937e94..95a3bd88b 100644
--- a/www/common/outer/local-store.js
+++ b/www/common/outer/local-store.js
@@ -4,7 +4,8 @@ define([
     '/common/outer/cache-store.js',
     '/bower_components/localforage/dist/localforage.min.js',
     '/customize/application_config.js',
-], function (Constants, Hash, Cache, localForage, AppConfig) {
+    '/common/common-util.js',
+], function (Constants, Hash, Cache, localForage, AppConfig, Util) {
     var LocalStore = {};
 
     LocalStore.setThumbnail = function (key, value, cb) {
@@ -120,10 +121,10 @@ define([
             return void AppConfig.customizeLogout(cb);
         }
 
-        cb = cb || function () {};
+        cb = Util.once(cb || function () {});
 
         try {
-            Cache.clear(cb); // XXX might call back twice in extreme circumstances?
+            Cache.clear(cb);
         } catch (e) {
             console.error(e);
             cb();