Merge #10694: Remove redundant code in MutateTxSign(CMutableTransaction&, const std::string&)

b1149ee Remove redundant code in MutateTxSign(CMutableTransaction&, const std::string&) (practicalswift)

Pull request description:

  Remove redundant code in `MutateTxSign(CMutableTransaction&, const std::string&)`.

Tree-SHA512: 0f0aba4def18b9a4ca73f2bd676881bc05d852d1d34b564416b2b979056263e5471c5d8ce743af44ef6bce11d77b74d18151c983b735cdf47c36f6591ab4b3fb

Author: laanwj

src/bitcoin-tx.cpp

@@ -551,7 +551,6 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
     // mergedTx will end up with all the signatures; it
     // starts as a clone of the raw tx:
     CMutableTransaction mergedTx(txVariants[0]);
-    bool fComplete = true;
     CCoinsView viewDummy;
     CCoinsViewCache view(&viewDummy);
 
@@ -637,7 +636,6 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
         CTxIn& txin = mergedTx.vin[i];
         const Coin& coin = view.AccessCoin(txin.prevout);
         if (coin.IsSpent()) {
-            fComplete = false;
             continue;
         }
         const CScript& prevPubKey = coin.out.scriptPubKey;
@@ -652,14 +650,6 @@ static void MutateTxSign(CMutableTransaction& tx, const std::string& flagStr)
         for (const CTransaction& txv : txVariants)
             sigdata = CombineSignatures(prevPubKey, MutableTransactionSignatureChecker(&mergedTx, i, amount), sigdata, DataFromTransaction(txv, i));
         UpdateTransaction(mergedTx, i, sigdata);
-
-        if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, MutableTransactionSignatureChecker(&mergedTx, i, amount)))
-            fComplete = false;
-    }
-
-    if (fComplete) {
-        // do nothing... for now
-        // perhaps store this for later optional JSON output
     }
 
     tx = mergedTx;