Index: /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp	(revision 55196)
+++ /trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp	(revision 55197)
@@ -414,5 +414,5 @@
         PDMAUDIOSAMPLE  samOut; \
         PDMAUDIOSAMPLE  samLast    = pRate->srcSampleLast; \
-        uint64_t        lDelta; \
+        uint64_t        lDelta = 0; \
         \
         AUDMIXBUF_MACRO_LOG(("Start: paDstEnd=%p - paDstStart=%p -> %zu\n", paDstEnd, paDst, paDstEnd - paDstStart)); \