ntoskrnl.exe: Add stub for IoUnregisterShutdownNotification.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -838,6 +838,15 @@ NTSTATUS WINAPI IoRegisterShutdownNotification( PDEVICE_OBJECT obj )
 
 
 /***********************************************************************
+ *           IoUnregisterShutdownNotification    (NTOSKRNL.EXE.@)
+ */
+VOID WINAPI IoUnregisterShutdownNotification( PDEVICE_OBJECT obj )
+{
+    FIXME( "stub: %p\n", obj );
+}
+
+
+/***********************************************************************
  *           IoReportResourceUsage    (NTOSKRNL.EXE.@)
  */
 NTSTATUS WINAPI IoReportResourceUsage(PUNICODE_STRING name, PDRIVER_OBJECT drv_obj, PCM_RESOURCE_LIST drv_list,

dlls/ntoskrnl.exe/ntoskrnl.exe.spec

@@ -470,7 +470,7 @@
 @ stdcall IoUnregisterFileSystem(ptr)
 @ stub IoUnregisterFsRegistrationChange
 @ stub IoUnregisterPlugPlayNotification
-@ stub IoUnregisterShutdownNotification
+@ stdcall IoUnregisterShutdownNotification(ptr)
 @ stub IoUpdateShareAccess
 @ stub IoValidateDeviceIoControlAccess
 @ stub IoVerifyPartitionTable