bugfix: handle an input-id of 0
bugfix: handle an input-id of 0

oldmantaiter/disco,simudream/disco,simudream/disco,pombredanne/disco,pombredanne/disco,pavlobaron/disco_playground,pooya/disco,mozilla/disco,pavlobaron/disco_playground,ktkt2009/disco,ErikDubbelboer/disco,simudream/disco,oldmantaiter/disco,mwilliams3/disco,discoproject/disco,ktkt2009/disco,discoproject/disco,pombredanne/disco,beni55/disco,pavlobaron/disco_playground,mozilla/disco,discoproject/disco,beni55/disco,beni55/disco,ErikDubbelboer/disco,pooya/disco,mwilliams3/disco,seabirdzh/disco,pombredanne/disco,discoproject/disco,seabirdzh/disco,simudream/disco,seabirdzh/disco,beni55/disco,seabirdzh/disco,mozilla/disco,ktkt2009/disco,ErikDubbelboer/disco,mozilla/disco,mwilliams3/disco,mwilliams3/disco,oldmantaiter/disco,pooya/disco,ktkt2009/disco,beni55/disco,ErikDubbelboer/disco,simudream/disco,scrapinghub/disco,scrapinghub/disco,scrapinghub/disco,pooya/disco,mwilliams3/disco,pombredanne/disco,oldmantaiter/disco,ktkt2009/disco,discoproject/disco,oldmantaiter/disco,ErikDubbelboer/disco,seabirdzh/disco,scrapinghub/disco,pavlobaron/disco_playground