dont allocate unnecessary decoders
dont allocate unnecessary decoders

Signed-off-by: Michael Krufky <a91dcbb4df49d8bfe0a9930d7ff911a4292ca1f5@valley.nyc.rr.com>

pashamesh/libdvbtee,anshul1912/libdvbtee,pashamesh/libdvbtee,mkrufky/libdvbtee,mkrufky/libdvbtee,anshul1912/libdvbtee,pashamesh/libdvbtee,mkrufky/libdvbtee,anshul1912/libdvbtee,mkrufky/libdvbtee,mkrufky/libdvbtee