L10nUtils: Fixed a bug where global keys are duplicated on refreshing feeds.

ubiquity/feed-parts/header/initial.js

@@ -48,11 +48,13 @@ var _ = (function prepareGettext({LocalizationUtils}, {UbiquitySetup}) {
     : x);
 
   var {languageCode} = UbiquitySetup;
-  if (!LocalizationUtils.loadLocalPo(feed.id, languageCode))
+  if (!LocalizationUtils.loadLocalPo(feed.id, languageCode)) {
+    LocalizationUtils.getFeedGlobals(feed.id).splice(0, 1/0);
     return function registerTemplate(x, data) {
       "l10n" in context || LocalizationUtils.registerFeedGlobal(feed.id, x);
       return renderTemplate(x, data);
     };
+  }
 
   var feedKey = LocalizationUtils.getLocalFeedKey(feed.id, languageCode);
   return function gettext(x, data) {

ubiquity/modules/localization_utils.js

@@ -123,12 +123,11 @@ var LocalizationUtils = {
   },
 
   getFeedGlobals:
-  function LU_getFeedGlobals(feedUrl) feedGlobalsDict[feedUrl] || [],
+  function LU_getFeedGlobals(feedUrl)
+    feedGlobalsDict[feedUrl] || (feedGlobalsDict[feedUrl] = []),
 
-  registerFeedGlobal: function LU_registerFeedGlobal(feedUrl, key) {
-    (feedGlobalsDict[feedUrl] || (feedGlobalsDict[feedUrl] = [])).push(key);
-    return this;
-  },
+  registerFeedGlobal: function LU_registerFeedGlobal(feedUrl, key)
+    LocalizationUtils.getFeedGlobals(feedUrl).push(key),
 
   // === {{{ LocalizationUtils.localizeCommand(cmd, langCode) }}} ===
   //