post installation script slightly broken

The postinst script for kcontrol 3.5.2-0ubuntu9 (latest in dapper repository) has a small bug. It has a bunch of lines in configure section to clean up some udev and hotplug stuff. It has the following lines:

        rmdir /etc/hotplug/usb 2>/dev/null
        rmdir /etc/hotplug 2>/dev/null

However, if these directories do not exist, the rmdir returns non-zero, and so does the script which means that apt thinks it failed. This can be easily remedied by changing the lines to:

        test -d /etc/hotplug/usb && rmdir /etc/hotplug/usb 2>/dev/null
        test -d /etc/hotplug && rmdir /etc/hotplug 2>/dev/null

This will still fail if these directories aren't empty, but I think that is the desired behaviour.