Rsync update from version 3.2.3 to 3.2.4 breaks the addon

[sxe]

With the last rsync update, from 3.2.3 to 3.2.4, the way arguments are processed has changed, which in result breaks this addon.

You can read more about the changes here: https://download.samba.org/pub/rsync/NEWS#3.2.4

A very simple, locally tested, fix is to add "--old-args" to the argument when a rsync version > 3.2.3 is detected.

Hope that help, cheers