Index: /trunk/src/VBox/Devices/Audio/DrvHostOSSAudio.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DrvHostOSSAudio.cpp	(revision 73694)
+++ /trunk/src/VBox/Devices/Audio/DrvHostOSSAudio.cpp	(revision 73695)
@@ -630,4 +630,5 @@
 
         OSSAUDIOSTREAMCFG ossAcq;
+        RT_ZERO(ossAcq);
 
         rc = ossStreamOpen(s_OSSConf.devpath_in, O_RDONLY | O_NONBLOCK, &ossReq, &ossAcq, &hFile);