CHJ:jchcost: fix warnings and reformat

Author: sipma

CodeHawk/CHJ/jchcost/dune

@@ -3,7 +3,3 @@
   (libraries chlib chutil jchlib jchpoly jchpre jchsys zarith)
   (public_name codehawk.jchcost)
   (wrapped false))
-
-(env
-  (dev
-    (flags (:standard -warn-error -A))))

CodeHawk/CHJ/jchcost/jCHCostAPI.mli

@@ -3,19 +3,20 @@
    Author: Henny Sipma
    ------------------------------------------------------------------------------
    The MIT License (MIT)
- 
+
    Copyright (c) 2005-2020 Kestrel Technology LLC
+   Copyright (c) 2020-2025 Henny B. Sipma
 
    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:
- 
+
    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.
-  
+
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -62,7 +63,7 @@ class type sidechannelcheck_int =
 
 class type costmodel_int =
 object
-  
+
   (* utility *)
   method mk_bottom: 'a
   method mk_top   : 'a
@@ -88,7 +89,7 @@ object
   (* xml *)
   method write_xml_cost: xml_element_int -> 'a -> unit
   method save_xml_class: class_info_int -> unit
-  method save_xml_atlas_class: class_info_int -> unit       
+  method save_xml_atlas_class: class_info_int -> unit
   method read_xml_cost: xml_element_int -> unit
   method read_xml_class: class_info_int -> unit