constify dentry_operations: FUSE

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 5e64b81..6fc5aed 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -493,7 +493,7 @@
 /** Device operations */
 extern const struct file_operations fuse_dev_operations;
 
-extern struct dentry_operations fuse_dentry_operations;
+extern const struct dentry_operations fuse_dentry_operations;
 
 /**
  * Get a filled in inode