bulcrypt/cccam: Fix Bulcrypt card updates over cccam.

This commit is supposed to allow Bulcrypt card updates over cccam
protocol when two OSCam's are talking to each other.

Patch by chepik posted in ticket #3539.

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9422 4b0bc96b-bc66-0410-9d44-ebda105a78c1