[mythtv] Shaved another second off the tuning process

[David Shirley]

Hi All,

I'm still looking at the tuning process within myth and found another
improvment.

in libs/libmythtv/dvbsiparser.cpp -> DVBSIParser::StartSectionReader

the line (approx #242)

int ret = poll(pollArray, pollLength, 1000);

is causing the initial tuning process to be blown out by 1 second.

Probably because the pollArray hasn't been initialised to grab PMT by the
time this function gets called.

easy fix was to decrease the 1000ms to 10ms so the first time round it
hits the timeout - outcome was 1 second improvment in channel
changing/tuning.

but i suspect a better fix would be to only start the StartSectionReader
after we want to grab the initial PMT.

Thoughts?

Cheers
Dave