| Index: lib/downloader.js | 
| =================================================================== | 
| --- a/lib/downloader.js | 
| +++ b/lib/downloader.js | 
| @@ -115,17 +115,17 @@ Downloader.prototype = | 
| onDownloadError: null, | 
|  | 
| /** | 
| * Checks whether anything needs downloading. | 
| */ | 
| _doCheck: function() | 
| { | 
| let now = Date.now(); | 
| -    for each (let downloadable in this.dataSource()) | 
| +    for (let downloadable of this.dataSource()) | 
| { | 
| if (downloadable.lastCheck && now - downloadable.lastCheck > this.maxAbsenceInterval) | 
| { | 
| // No checks for a long time interval - user must have been offline, e.g. | 
| // during a weekend. Increase soft expiration to prevent load peaks on the | 
| // server. | 
| downloadable.softExpiration += now - downloadable.lastCheck; | 
| } | 
|  |