Tvheadend

As far as I can see tvheadend currently handles only one program from an IPTV stream. And it does that by getting the first program number and PID from the PAT table. This behavior is incorrect since sometimes (which is 95% of iptv channels with my provider) the first entry in PAT table is a NIT table with PID = 0x10 and program number = 0. A simple patch is provided to resolve this.

I'm not aware of whether other tables besides NIT and PMT may be found in the PAT table, though. But if they do, their PIDs (0x01, 0x11, 0x12, 0x14) can be excluded just the same way.