Fix possible crash with grass ABM.

diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index b8cdf43393e87c6bd79effacd6d25b0e588b7856..63b7305b5c9bba708d2b9b0ba6126b106ed52efb 100644 (file)
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -137,7 +137,9 @@ minetest.register_abm({
                local above = {x=pos.x, y=pos.y+1, z=pos.z}
                local name = minetest.get_node(above).name
                local nodedef = minetest.registered_nodes[name]
-               if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light") and nodedef.liquidtype == "none" and minetest.get_node_light(above) >= 13 then
+               if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light")
+                               and nodedef.liquidtype == "none"
+                               and (minetest.get_node_light(above) or 0) >= 13 then
                        if name == "default:snow" or name == "default:snowblock" then
                                minetest.set_node(pos, {name = "default:dirt_with_snow"})
                        else
@@ -155,7 +157,9 @@ minetest.register_abm({
                local above = {x=pos.x, y=pos.y+1, z=pos.z}
                local name = minetest.get_node(above).name
                local nodedef = minetest.registered_nodes[name]
-               if name ~= "ignore" and nodedef and not ((nodedef.sunlight_propagates or nodedef.paramtype == "light") and nodedef.liquidtype == "none") then
+               if name ~= "ignore" and nodedef
+                               and not ((nodedef.sunlight_propagates or nodedef.paramtype == "light")
+                               and nodedef.liquidtype == "none") then
                        minetest.set_node(pos, {name = "default:dirt"})
                end
        end