Fix crash when two controllers are connected

1 files changed, 1 insertions, 1 deletions

diff --git a/init.lua b/init.lua
index 7506b83..d0b63cf 100644
--- a/init.lua
+++ b/init.lua
@@ -528,7 +528,7 @@ minetest.register_lbm({
 	action = function(pos)
 		local meta = minetest.get_meta(pos)
 		local mem = minetest.deserialize(meta:get_string("mem"))
-		if mem.cycle then
+		if mem and mem.cycle then
 			local event = {}
 			event.type = "interrupt"
 			event.iid = "tick"