Fixed GCC 4 warnings.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19055 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/DiskDevicePrivate.h

@@ -1,22 +1,27 @@
-//----------------------------------------------------------------------
-//  This software is part of the OpenBeOS distribution and is covered 
-//  by the OpenBeOS license.
-//---------------------------------------------------------------------
-
+/*
+ * Copyright 2003-2006, Haiku Inc.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Ingo Weinhold, [email protected]
+ */
 #ifndef _DISK_DEVICE_PRIVATE_H
 #define _DISK_DEVICE_PRIVATE_H
 
+
 #include <DiskDeviceDefs.h>
 #include <DiskDeviceVisitor.h>
 
 class BMessenger;
 class BPath;
 
+
 namespace BPrivate {
 
 // PartitionFilter
 class PartitionFilter {
 public:
+	virtual ~PartitionFilter();
 	virtual bool Filter(BPartition *partition, int32 level) = 0;
 };