Delete the subfolder not the parent folder

src/NzbDrone.Common/Disk/DiskProviderBase.cs

@@ -428,7 +428,7 @@ public void RemoveEmptySubfolders(string path)
             {
                 if (files.None(f => subfolder.IsParentPath(f)))
                 {
-                    DeleteFolder(path, false);
+                    DeleteFolder(subfolder, false);
                 }
             }
         }