ao_pulse: reduce requested device buffer size

Same deal as with the previous commit for ALSA.

Untested.

DOCS/man/ao.rst

@@ -139,7 +139,7 @@ Available audio output drivers are:
         Set the audio buffer size in milliseconds. A higher value buffers
         more data, and has a lower probability of buffer underruns. A smaller
         value makes the audio stream react faster, e.g. to playback speed
-        changes. Default: 250.
+        changes.
 
     ``--pulse-latency-hacks=<yes|no>``
         Enable hacks to workaround PulseAudio timing bugs (default: no). If

audio/out/ao_pulse.c

@@ -831,7 +831,7 @@ const struct ao_driver audio_out_pulse = {
     .list_devs = list_devs,
     .priv_size = sizeof(struct priv),
     .priv_defaults = &(const struct priv) {
-        .cfg_buffer = 250,
+        .cfg_buffer = 100,
     },
     .options = (const struct m_option[]) {
         OPT_STRING("host", cfg_host, 0),