don't clear package rules before "@usage" display requests

src/compiler/haxe.ml

@@ -1032,7 +1032,7 @@ try
 	let ext = Initialize.initialize_target ctx com classes in
 	(* if we are at the last compilation step, allow all packages accesses - in case of macros or opening another project file *)
 	if com.display.dms_display then begin match com.display.dms_kind with
-		| DMDefault -> ()
+		| DMDefault | DMUsage _ -> ()
 		| _ -> if not ctx.has_next then com.package_rules <- PMap.foldi (fun p r acc -> match r with Forbidden -> acc | _ -> PMap.add p r acc) com.package_rules PMap.empty;
 	end;
 	com.config <- get_config com; (* make sure to adapt all flags changes defined after platform *)