File keybinder-doc-xml-fallback.patch of Package keybinder

--- keybinder-0.3.1/docs/keybinder-docs.sgml	2015-11-06 16:08:46.000000000 +0100
+++ keybinder-0.3.1/docs/keybinder-docs.sgml	2020-05-27 23:08:53.420091878 +0200
@@ -23,7 +23,7 @@
   </chapter>
   <chapter id="object-tree">
     <title>Object Hierarchy</title>
-     <xi:include href="xml/tree_index.sgml"/>
+     <xi:include href="xml/tree_index.sgml"><xi:fallback /></xi:include>
   </chapter>
   <index id="api-index-full">
     <title>API Index</title>