message: Fix unregister
diff: @@ -137,11 +137,11 @@ function StorageController($scope, dimSettingsService, SyncService, GoogleDriveS
  }
  }
  - window.addEventListener("message", messageHandler, false);
  + window.addEventListener('message', messageHandler, false);
  window.postMessage({ type: 'DIM_EXT_PING' }, "*");
  $scope.$on('$destroy', () => {
  - window.removeEventListener(messageHandler);
  + window.removeEventListener('message', messageHandler);
  });
  }
  