Use wrapping_add, not +, in one case

src/vm.rs

@@ -44,7 +44,7 @@ impl MovType {
     fn merge(&self, old_value: Sample, new_value: Sample) -> Sample {
         match self {
             MovType::Mov => new_value,
-            MovType::Add => Sample(old_value.0 + new_value.0),
+            MovType::Add => Sample(old_value.0.wrapping_add(new_value.0)),
             MovType::Xor => Sample(old_value.0 ^ new_value.0)
         }
     }