Enable "zero sample output" for streaming to the server with squelch

[kovalroma]

There is a problem when streaming from rtl_fm using ezstream with squelch.
For example this is a command
rtl_fm -f 145.575M -s 16k -l 0 | lame --scale 2 --lowpass 4.0 --highpass 0.2 -r -s 16.0 -m m - - | ezstream -c /etc/ezstream.xml

When squelch is enabled the stream stops when the squelch is triggered. When rtl_fm is squelched it does not generate any data, probably causing lame and ezstream to fail.

Mr. Wilson created a simple little change for rtl_fm which outputs values of 0 (instead of nothing) when the output is squelched.
Here is more information
http://lists.osmocom.org/pipermail/osmocom-sdr/2015-November/000138.html
and
http://www.rtl-sdr.com/forum/viewtopic.php?f=7&t=141

Can I ask you to apply his code ?

[pinkavaj]

Should be solved in https://github.com/keenerd/rtl-sdr