dep/cubeb: Sync to 19fcbef

And apply PR #740 (Re-enable and polish IAudioClient3 to achieve lower
latencies).

`*latency_frames = min_period;` in wasapi_get_min_latency was changed to
`*latency_frames = hns_to_frames(params.rate, min_period_rt);`, as
otherwise it reports in mixer frames, not stream frames.

dep/cubeb/src/cubeb_sndio.c

@@ -667,6 +667,7 @@ static struct cubeb_ops const sndio_ops = {
     .get_max_channel_count = sndio_get_max_channel_count,
     .get_min_latency = sndio_get_min_latency,
     .get_preferred_sample_rate = sndio_get_preferred_sample_rate,
+    .get_supported_input_processing_params = NULL,
     .enumerate_devices = sndio_enumerate_devices,
     .device_collection_destroy = sndio_device_collection_destroy,
     .destroy = sndio_destroy,
@@ -679,6 +680,8 @@ static struct cubeb_ops const sndio_ops = {
     .stream_set_volume = sndio_stream_set_volume,
     .stream_set_name = NULL,
     .stream_get_current_device = NULL,
+    .stream_set_input_mute = NULL,
+    .stream_set_input_processing_params = NULL,
     .stream_device_destroy = NULL,
     .stream_register_device_changed_callback = NULL,
     .register_device_collection_changed = NULL};