Better describe the problem

Author: wchen-r7

modules/post/windows/gather/enum_services.rb

@@ -116,7 +116,7 @@ def run
           print_error(e.to_s)
         end
       else
-        print_error("Problem enumerating services")
+        print_error("Problem enumerating services (no service name found)")
       end
     end
       # store loot on completion of collection