more trivial ->iterate_shared conversions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index b61b883..c7a8699 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -166,7 +166,7 @@
 
 static const struct file_operations openprom_operations = {
 	.read		= generic_read_dir,
-	.iterate	= openpromfs_readdir,
+	.iterate_shared	= openpromfs_readdir,
 	.llseek		= generic_file_llseek,
 };