Fix retrieval of hostname fact based on network.

When Facter.value(:domain) is nil the facts fqdn_<network> are failing
with :

Could not retrieve fact='fqdn_external', resolution='<anonymous>': undefined method `empty?' for nil:NilClass

Change-Id: I3e7fa983d4cf91c6ab25f9aa4c353b364f44826e
Closes-bug: 1595125

diff --git a/lib/facter/alt_fqdns.rb b/lib/facter/alt_fqdns.rb
index 24d6ef1..8a4d59b 100644 (file)
--- a/lib/facter/alt_fqdns.rb
+++ b/lib/facter/alt_fqdns.rb
@@ -26,7 +26,7 @@
         Facter.value(:hostname),
         network,
         Facter.value(:domain),
-      ].reject { |part| part.empty? }
+      ].reject { |part| part.nil? || part.empty? }
       external_hostname_parts.join(".")
     end
   end