Run the downstream playback queue even if there are no samples
in the mixing engine buffer. The downstream queue may still have
queued samples.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
 audio/audio.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/audio/audio.c b/audio/audio.c
index 57eddb3324..a2c4c55477 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1186,6 +1186,9 @@ static void audio_run_out (AudioState *s)
                     }
                 }
             }
+            if (hw->pcm_ops->run_buffer_out) {
+                hw->pcm_ops->run_buffer_out(hw);
+            }
             continue;
         }
 
-- 
2.26.2