Index: /trunk/src/VBox/Devices/VMMDev/VMMDevHGCM.cpp
===================================================================
--- /trunk/src/VBox/Devices/VMMDev/VMMDevHGCM.cpp	(revision 20023)
+++ /trunk/src/VBox/Devices/VMMDev/VMMDevHGCM.cpp	(revision 20024)
@@ -617,5 +617,5 @@
                          if (size == 0)
                          {
-                             pHostParm->u.pointer.addr = (void *) 0xfeeddead;
+                             pHostParm->u.pointer.addr = NULL;
                          }
                          else
@@ -719,5 +719,5 @@
                          if (size == 0)
                          {
-                             pHostParm->u.pointer.addr = (void *) 0xfeeddead;
+                             pHostParm->u.pointer.addr = NULL;
                          }
                          else