[java] don't use null_pos so much

see #11095

src/codegen/java.ml

@@ -485,7 +485,7 @@ let convert_java_enum ctx p pe =
 			(match jc.csuper with
 				| TObject( (["java";"lang"], "Object"), _ ) -> ()
 				| TObject( (["haxe";"lang"], "HxObject"), _ ) -> meta := (Meta.HxGen,[],p) :: !meta
-				| _ -> flags := HExtends (get_type_path ctx (convert_signature ctx p jc.csuper),null_pos) :: !flags
+				| _ -> flags := HExtends (get_type_path ctx (convert_signature ctx p jc.csuper),p) :: !flags
 			);
 
 			List.iter (fun i ->
@@ -493,9 +493,9 @@ let convert_java_enum ctx p pe =
 				| TObject ( (["haxe";"lang"], "IHxObject"), _ ) -> meta := (Meta.HxGen,[],p) :: !meta
 				| _ -> flags :=
 					if !is_interface then
-						HExtends (get_type_path ctx (convert_signature ctx p i),null_pos) :: !flags
+						HExtends (get_type_path ctx (convert_signature ctx p i),p) :: !flags
 					else
-						HImplements (get_type_path ctx (convert_signature ctx p i),null_pos) :: !flags
+						HImplements (get_type_path ctx (convert_signature ctx p i),p) :: !flags
 			) jc.cinterfaces;
 
 			let fields = ref [] in