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>
(cherry picked from commit 09a36158c283f7448d1b00fdbb6634f05d27f922)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/audio/audio.c b/audio/audio.c
index 8d1e4ad922..7ac74f9e16 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1744,7 +1744,7 @@ static AudioState *audio_init(Audiodev *dev, Error **errp)
         if (driver) {
             done = !audio_driver_init(s, driver, dev, errp);
         } else {
-            error_setg(errp, "Unknown audio driver `%s'\n", drvname);
+            error_setg(errp, "Unknown audio driver `%s'", drvname);
         }
         if (!done) {
             goto out;
-- 
2.39.2