Issue 6775 - Work around filter data stored in IndexedDB getting lost on Microsoft Edge

lib/ioIndexedDB.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 191 matching lines @@
   {
     let store = getObjectStore(dbInstance, storeName);
     let req = store.get(fileName);
 
     req.onsuccess = event => resolve(event.currentTarget.result);
     req.onerror = event => reject(event.target.error);
   })
   .catch(error =>
   {
     if (error.name == "UnknownError")
-      return reestablishConnection(dbInstance)
-        .then(() => undefined);

[Sebastian Noack, 2018/09/04 21:00:01]

Nit: Wrapping here seems unnecessary. It appears to fit on one line.

[geo, 2018/09/05 14:04:34]

Done.

+      return reestablishConnection(dbInstance).then(() => undefined);
   });
 }
 
 function saveFile(data, dbInstance, storeName)
 {
   return new Promise((resolve, reject) =>
   {
     let store = getObjectStore(dbInstance, storeName);
     let req = store.put(data);
 
@@ skipping 121 matching lines @@
                 fileName: fileToKey(newName),
                 content: fileData.content,
                 lastModified: fileData.lastModified
               },
               dbInstance,
               dbConfig.storeName))
           .then(() => deleteFile(fromFile, dbInstance, dbConfig.storeName))));
   }
 };