[XFS] kill shouty XFS_ITOV_NULL macro

Replace XFS_ITOV_NULL() with the new VFS_I() inline.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31722a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c
index 25488b6..1e39d04 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.c
+++ b/fs/xfs/linux-2.6/xfs_vnode.c
@@ -108,7 +108,7 @@
  */
 static inline int xfs_icount(struct xfs_inode *ip)
 {
-	bhv_vnode_t *vp = XFS_ITOV_NULL(ip);
+	bhv_vnode_t *vp = VFS_I(ip);
 
 	if (vp)
 		return vn_count(vp);