Incorrect Audio Input Level Warning for IGate Medium

[skidder]

Direwolf logs a warning about the audio input level being too low when handling internally-generated IGate packets. This behavior is incorrect since the warning should only be logged for packets coming from the radio, not for IGate medium.

Logs look like:

pi@digipi:~ $ cat direwolf.log | grep -C1 "too low"

Audio input level is too low.  Increase so most stations are around 50.
[0.0] KK6DCI-2>APDW17:!R;6`X/Xl,&{0GDirewolf/Pi Zero/Yaesu FT7900
--

Audio input level is too low.  Increase so most stations are around 50.
[0.0] KK6DCI-2>APDW17:!R;6`X/Xl,&{0GDirewolf/Pi Zero/Yaesu FT7900
--

Audio input level is too low.  Increase so most stations are around 50.
[0.0] KK6DCI-2>APDW17:!R;6`X/Xl,&{0GDirewolf/Pi Zero/Yaesu FT7900
--

Audio input level is too low.  Increase so most stations are around 50.
[0.0] KK6DCI-2>APDW17:!R;6`X/Xl,&{0GDirewolf/Pi Zero/Yaesu FT7900
--

Audio input level is too low.  Increase so most stations are around 50.
[0.0] KK6DCI-2>APDW17:!R;6`X/Xl,&{0GDirewolf/Pi Zero/Yaesu FT7900

My direwolf config:

MYCALL KK6DCI-2
PBEACON sendto=RF compress=1 delay=00:30 every=15 lat=38^05.61N long=122^10.89W symbol="igate" overlay=R power=50 height=5 gain=6 comment="Direwolf/Pi Zero/Yaesu FT7900"

DWAIT 0
TXDELAY 30
TXTAIL 10

AGWPORT 8000
KISSPORT 8001

ADEVICE plughw:0,0