Ensure conditional doesn't mask bug crash issue

mods/ENTITIES/mcl_mobs/physics.lua

@@ -625,6 +625,12 @@ function mob_class:do_env_damage()
 	local node = minetest.get_node(pos)
 	if node then
 		if node.name ~= "ignore" then
+			-- put below code in this block if we can prove that unloaded maps are causing crash.
+			-- it should warn then error
+		else
+			minetest.log("warning", "Pos is ignored: " .. dump(pos))
+		end
+
 		local sunlight = minetest.get_natural_light(pos, self.time_of_day)
 
 		if self.light_damage ~= 0 and (sunlight or 0) > 12 then
@@ -643,9 +649,7 @@ function mob_class:do_env_damage()
 				end
 			end
 		end
-		else
-			minetest.log("warning", "Pos is ignored: " .. dump(pos))
-		end
+
 	end
 
 	local y_level = self.collisionbox[2]