fix a nil.dup by returning a proper platformlist when we don't have a session, dump actual info with 'info' command instead of nothing

git-svn-id: file:///home/svn/framework3/trunk@11425 4d416f70-5f16-0410-b530-b9f4589650da

lib/msf/base/serializer/readable_text.rb

@@ -29,6 +29,8 @@ class ReadableText
 				return dump_exploit_module(mod, indent)
 			when MODULE_AUX
 				return dump_auxiliary_module(mod, indent)
+			when MODULE_POST
+				return dump_basic_module(mod, indent)
 			else
 				return dump_generic_module(mod, indent)
 		end