Increase resilience if lookup var comes back with nil object

diff --git a/lib/puppet/parser/functions/has_interface_with.rb b/lib/puppet/parser/functions/has_interface_with.rb
index 7f150a7176c54e2010c60effe752ed6e0674f7f7..927b0dfebc49633615e970fb7652a50653753fd0 100644 (file)
--- a/lib/puppet/parser/functions/has_interface_with.rb
+++ b/lib/puppet/parser/functions/has_interface_with.rb
@@ -25,7 +25,7 @@ has_interface_with("lo")                        => true
     interfaces = lookupvar('interfaces')
 
     # If we do not have any interfaces, then there are no requested attributes
-    return false if (interfaces == :undefined)
+    return false if (interfaces == :undefined || interfaces.nil?)
 
     interfaces = interfaces.split(',')