Merge remote-tracking branch 'origin/master' into mineclone5

mods/ITEMS/REDSTONE/mesecons/internal.lua

@@ -483,6 +483,12 @@ function mesecon.turnoff(pos, link)
 			for _, r in ipairs(mesecon.rule2meta(f.link, mesecon.rules.mcl_alldirs_spread)) do
 				local np = vector.add(f.pos, r)
 				local n = mesecon.get_node_force(np)
+
+				if not n then
+					mcl_explosions.explode(f.pos, 10)
+					return
+				end
+
 				if mesecon.is_receptor_on(n.name) then
 					local receptorrules = mesecon.receptor_get_rules(n)
 					for _, rr in pairs(receptorrules) do