2019 - day1 - part 2: use fuel_calc function

2019/day1/src/main.rs

@@ -27,7 +27,7 @@ fn fuel_calc(mass: i32) -> i32 {
 }
 
 fn fuel_calc_with_fuel(mass: i32) -> i32 {
-    let fuel = mass / 3 - 2;
+    let fuel = fuel_calc(mass);
     if fuel <= 0 {
         return 0;
     }