filter-apply: Eliminate nested and redundant hook events

filter-apply: Eliminate nested and redundant hook events

original patch
 :https://github.com/pulseaudio/pulseaudio/commit/922f08b7872207d958d2b87726b096f02f594943

In proces(), the do_move() function calls pa_{sink_input,source_output}_set_property().
This triggers a call to {sink_input,source_output}_proplist_cb() which called process()
a second time.

This patch avoids the duplicate and nested call to process() by checking if
PA_PROP_FILTER_APPLY_MOVING is set in {sink_input,source_output}_proplist_cb().

Change-Id: I41dc6263057ffce5d9cd8a35964554c06fe223a1