Index: /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp	(revision 64207)
+++ /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp	(revision 64208)
@@ -746,5 +746,6 @@
  * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
  */
-static DECLCALLBACK(int) drvHostPulseAudioStreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream, void *pvBuf, uint32_t cbBuf, uint32_t *pcbRead)
+static DECLCALLBACK(int) drvHostPulseAudioStreamCapture(PPDMIHOSTAUDIO pInterface,
+                                                        PPDMAUDIOSTREAM pStream, void *pvBuf, uint32_t cbBuf, uint32_t *pcbRead)
 {
     RT_NOREF(pvBuf, cbBuf);
@@ -853,8 +854,7 @@
     {
         uint32_t cProcessed = 0;
-      /*  if (cWrittenTotal)
-            rc = AudioMixBufMixToParent(&pStream->MixBuf, cWrittenTotal,
-                                        &cProcessed);*/
-        NOREF(cProcessed);
+        if (cWrittenTotal)
+            rc = AudioMixBufMixToParent(&pStream->MixBuf, cWrittenTotal, &cProcessed);
+
         if (pcbRead)
             *pcbRead = cWrittenTotal;