missed lt

Author: ChihChengLiang

zkevm-circuits/src/evm_circuit/util/math_gadget/comparison.rs

@@ -21,7 +21,7 @@ impl<F: Field, const N_BYTES: usize> ComparisonGadget<F, N_BYTES> {
         lhs: Expression<F>,
         rhs: Expression<F>,
     ) -> Self {
-        let lt = LtGadget::<F, N_BYTES>::construct(cb, lhs, rhs);
+        let lt = cb.is_lt(lhs, rhs);
         let eq = cb.is_zero(sum::expr(&lt.diff_bytes()));
 
         Self { lt, eq }