s->update_requested_latency(s);
while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
- o->update_source_requested_latency(o);
+ if (o->update_source_requested_latency)
+ o->update_source_requested_latency(o);
if (s->monitor_of)
pa_sink_invalidate_requested_latency(s->monitor_of);