Index: /trunk/src/VBox/Main/include/GuestDnDPrivate.h
===================================================================
--- /trunk/src/VBox/Main/include/GuestDnDPrivate.h	(revision 58224)
+++ /trunk/src/VBox/Main/include/GuestDnDPrivate.h	(revision 58225)
@@ -218,5 +218,8 @@
     GuestDnDData(void)
         : cbProcessed(0)
-        , cbAddData(0) { }
+        , cbAddData(0)
+    {
+        RT_ZERO(dataHdr);
+    }
 
     virtual ~GuestDnDData(void)