Fix the properties counter declaration place

The properties counter shall count quantity of the processed properties for
the each found device.

Tested on Mac OSX 10.9 with Qt5, no regressions found.

Change-Id: Ie665c52dfdea5a0f9c358909e903703c41144a60
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>