$OpenBSD: patch-lib_Data_Visitor_pm,v 1.1 2017/07/20 13:54:35 bluhm Exp $

Data::Alias is broken with Perl 5.24.1, do not use it.
https://rt.cpan.org/Public/Bug/Display.html?id=118854

Index: lib/Data/Visitor.pm
--- lib/Data/Visitor.pm.orig
+++ lib/Data/Visitor.pm
@@ -22,7 +22,7 @@ use namespace::clean -except => 'meta';
 # the double not makes this no longer undef, so exempt from useless constant warnings in older perls
 use constant DEBUG => not not our $DEBUG || $ENV{DATA_VISITOR_DEBUG};
 
-use constant HAS_DATA_ALIAS => load_optional_class('Data::Alias');
+use constant HAS_DATA_ALIAS => 0;
 
 has tied_as_objects => (
 	isa => "Bool",
