handle incorrect format values in pulse_play
handle incorrect format values in pulse_play

the switch statement for id->format in the pulse_play function didn't handle the case of an invalid format.  Add a default
case that logs the error and returns -1.

Signed-off-by: Christopher Brannon <12dbcddb2a34235e759e3c56208f0d4ec028c34a@gmail.com>

razr/opentts,razr/opentts,razr/opentts,razr/opentts