Index: /trunk/src/VBox/VMM/VMMR3/PDMBlkCache.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/PDMBlkCache.cpp	(revision 38879)
+++ /trunk/src/VBox/VMM/VMMR3/PDMBlkCache.cpp	(revision 38880)
@@ -2445,5 +2445,5 @@
         while (cbLeft)
         {
-            size_t cbThisDiscard;
+            size_t cbThisDiscard = 0;
 
             pEntry = pdmBlkCacheGetCacheEntryByOffset(pBlkCache, offCur);