[XFS] Rework code snippets slightly to remove remaining recent-gcc
warnings.

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:26364a

Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 5fa0adb..86c1bf0 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1961,9 +1961,9 @@
 	xfs_agino_t	agino;
 	xfs_agino_t	next_agino;
 	xfs_buf_t	*last_ibp;
-	xfs_dinode_t	*last_dip;
+	xfs_dinode_t	*last_dip = NULL;
 	short		bucket_index;
-	int		offset, last_offset;
+	int		offset, last_offset = 0;
 	int		error;
 	int		agi_ok;