Index: /trunk/src/VBox/Runtime/r0drv/powernotification-r0drv.c
===================================================================
--- /trunk/src/VBox/Runtime/r0drv/powernotification-r0drv.c	(revision 22876)
+++ /trunk/src/VBox/Runtime/r0drv/powernotification-r0drv.c	(revision 22877)
@@ -309,5 +309,5 @@
         {
             PRTPOWERNOTIFYREG pHead;
-            RTSPINLOCKTMP Tmp;
+            RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
 
             /** @todo OS specific term here */