cosmetics: fix showing negative inactivity ms value in trace log


git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9057 4b0bc96b-bc66-0410-9d44-ebda105a78c1
dvbapi: do not add duplicate socket fd's to the poll

The current code for IPBOX boxtype should be applicable for all cases.
If a the same fd is added twice to the poll() command it will return
two POLLIN events, which then lead to unnecessary timeout reading data
from socket.
Optimises work for multiple services on one socket.


git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9058 4b0bc96b-bc66-0410-9d44-ebda105a78c1