xfs: make xfs_dir_cilookup_result use unsigned char

For consistency with the result of the code.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h
index 1d9ef96..74a3b10 100644
--- a/fs/xfs/xfs_dir2.h
+++ b/fs/xfs/xfs_dir2.h
@@ -100,7 +100,7 @@
 extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
 				struct xfs_dabuf *bp);
 
-extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const char *name,
-				int len);
+extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
+				const unsigned char *name, int len);
 
 #endif	/* __XFS_DIR2_H__ */