winepulse depends on PulseAudio to allocate the entire requested
buffer size. If it allocates less than that size, then mmdevapi
clients may not be able to write as much data as they expect. So, we
should warn the user that the PA buffer is too small.

This is a common symptom of users setting the PULSE_LATENCY_MSEC
environment variable, which would help in some situations with
winealsa, but is no longer required with winepulse.
Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Sebastian Lackner <sebastian@fds-team.de>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>