Add a rescue to catch method missing for stage_payload

This allows us to provide a friendlier message to users when they are
using a stageless listener with a staged payload.

lib/msf/core/handler/reverse_http.rb

@@ -331,6 +331,7 @@ protected
 
         resp['Content-Type'] = 'application/octet-stream'
 
+        begin
           # generate the stage, but pass in the existing UUID and connection id so that
           # we don't get new ones generated.
           blob = obj.stage_payload(
@@ -354,6 +355,10 @@ protected
             :ssl                => ssl?,
             :payload_uuid       => uuid
           })
+        rescue NoMethodError
+          print_error("Staging failed. This can occur when stageless listeners are used with staged payloads.")
+          return
+        end
 
       when :connect
         print_status("#{cli.peerhost}:#{cli.peerport} (UUID: #{uuid.to_s}) Attaching orphaned/stageless session ...")