audio/audio.c: remove trailing newline in error_setg

error_setg() appends newline to the formatted message.
Fixes: cb94ff5f80c5 ("audio: propagate Error * out of audio_init")

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
1 file changed