added a #to_ber method to BerIdentifiedNull, which handles ASN.1 NULL objects.

Author: blackhedd

lib/net/ber.rb

@@ -52,6 +52,9 @@ def initialize
 
   class BerIdentifiedNull
     attr_accessor :ber_identifier
+    def to_ber
+	"\005\000"
+    end
   end
 
   #--