File fix-tests.patch of Package perl-XML-Atom

# See https://github.com/miyagawa/xml-atom/issues/18

Index: XML-Atom-0.42/t/31-external-entities-libxml.t
===================================================================
--- XML-Atom-0.42.orig/t/31-external-entities-libxml.t
+++ XML-Atom-0.42/t/31-external-entities-libxml.t
@@ -50,7 +50,7 @@ EOX
 
 ## custom parser
 {
-    my $libxml = XML::LibXML->new;
+    my $libxml = XML::LibXML->new(expand_xinclude => 1, expand_entities => 1, load_ext_dtd    => 1);
     my $entry = XML::Atom::Entry->new(Stream => \$xml, Parser => $libxml);
     is $entry->title, "Guest Author", "got title";
     my $content = $entry->content->body;