Repairs error if damage is disabled and try to sprint

mods/player/hbsprint/init.lua

@@ -230,7 +230,7 @@ local function sprint_step(player, dtime)
   local hunger = 30
   if starve == "hbhunger" then
     hunger = tonumber(hbhunger.hunger[name])
-  elseif starve == "hunger_ng" then
+  elseif starve == "hunger_ng" and minetest.is_yes(minetest.settings:get('enable_damage')) then
     hunger = hunger_ng.get_hunger_information(name).hunger.exact
   end