[classify] Workaround to detect exe from sample cache initated sink-inputs.
[classify] Workaround to detect exe from sample cache initated sink-inputs.

Sample cache initiated sink-inputs don't have a client, but sample's proplist
contains PA_PROP_APPLICATION_PROCESS_BINARY anyway. Try to get this value
from proplist. This allows using 'exe' matching in stream definitions in xpolicy.conf
for sample cache initiated streams as well.

alinelena/pulseaudio-policy-enforcement,alinelena/pulseaudio-policy-enforcement