New: Ignore inaccessible files with getting files

(cherry picked from commit e5aa8584100d96a2077c57f74ae5b2ceab63de19)

src/NzbDrone.Common/EnvironmentInfo/AppFolderFactory.cs

@@ -159,7 +159,7 @@ namespace NzbDrone.Common.EnvironmentInfo
 
         private void CleanupSqLiteRollbackFiles()
         {
-            _diskProvider.GetFiles(_appFolderInfo.AppDataFolder, SearchOption.TopDirectoryOnly)
+            _diskProvider.GetFiles(_appFolderInfo.AppDataFolder, false)
                          .Where(f => Path.GetFileName(f).StartsWith("nzbdrone.db"))
                          .ToList()
                          .ForEach(_diskProvider.DeleteFile);