ddfs_gc_main: fix a bad pattern matching attempt.
ddfs_gc_main: fix a bad pattern matching attempt.

We cannot do a lists:flatten and expect the items to match with [ObjName], in
this case, the flattening was unnecessary.

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