mint_contract: changed the order of 'preimage.extend' to reflect earlier commit. cleaned more boilerplate

src/circuit/mint_contract.rs

@@ -125,35 +125,19 @@ impl Circuit<bls12_381::Scalar> for MintContract {
         // Line 60: binary_extend preimage value
         preimage.extend(value);
 
-        // Line 67: binary_extend preimage serial
-        preimage.extend(serial);
-
-        // Line 69: alloc_const_bit zero_bit false
-        let zero_bit = Boolean::constant(false);
-
-        // Line 70: binary_push preimage zero_bit
-        preimage.push(zero_bit);
-
-        // Line 72: alloc_const_bit zero_bit false
-        let zero_bit = Boolean::constant(false);
-
-        // Line 73: binary_push preimage zero_bit
-        preimage.push(zero_bit);
-
-        // Line 75: alloc_const_bit zero_bit false
-        let zero_bit = Boolean::constant(false);
-
-        // Line 76: binary_push preimage zero_bit
-        preimage.push(zero_bit);
-
-        // Line 78: alloc_const_bit zero_bit false
-        let zero_bit = Boolean::constant(false);
+        // add 4 zero bits
+        for _ in 0..4 {
+            // Line 71: alloc_const_bit zero_bit false
+            let zero_bit = Boolean::constant(false);
 
-        // Line 79: binary_push preimage zero_bit
-        preimage.push(zero_bit);
+            // Line 72: binary_push preimage zero_bit
+            preimage.push(zero_bit);
+        }
+        // Line 99: binary_extend preimage asset_id
+        preimage.extend(asset_id);
 
-        // Line 83: binary_extend preimage randomness_coin
-        preimage.extend(randomness_coin);
+        // Line 67: binary_extend preimage serial
+        preimage.extend(serial);
 
         // add 4 zero bits
         for _ in 0..4 {
@@ -163,8 +147,8 @@ impl Circuit<bls12_381::Scalar> for MintContract {
             // Line 72: binary_push preimage zero_bit
             preimage.push(zero_bit);
         }
-        // Line 99: binary_extend preimage asset_id
-        preimage.extend(asset_id);
+        // Line 83: binary_extend preimage randomness_coin
+        preimage.extend(randomness_coin);
 
         // add 4 zero bits
         for _ in 0..4 {