Changed the check for a succesfull cp by checking it's result code.
Changed the check for a succesfull cp by checking it's result code.

racing-tech/rrp-raspi-installer,yodaaut/raspbian-ua-netinst,FooDeas/raspberrypi-ua-netinst,beylsp/rpi-installer,firepick/FireHawk,racing-tech/rrp-raspi-installer,daytonpid/FireHawk,beylsp/rpi-installer