Declare the latin1 pod encoding.

diff -Nrup a/xvattr.pod.in b/xvattr.pod.in
--- a/xvattr.pod.in	2002-03-03 21:08:28.000000000 +0100
+++ b/xvattr.pod.in	2026-10-22 17:22:17.151741286 +0200
@@ -1,3 +1,5 @@
+=encoding latin1
+
 =pod
 
 =head1 NAME