wallet: check if tx scriptPubKey is unspendable

src/wallet/wallet.cpp

@@ -1035,7 +1035,7 @@ void CWalletTx::GetAmounts(list<COutputEntry>& listReceived,
         // In either case, we need to get the destination address
         CTxDestination address;
 
-        if (!ExtractDestination(txout.scriptPubKey, address) && txout.scriptPubKey[0] != OP_RETURN)
+        if (!ExtractDestination(txout.scriptPubKey, address) && txout.scriptPubKey.IsUnspendable())
         {
             LogPrintf("CWalletTx::GetAmounts: Unknown transaction type found, txid %s\n",
                      this->GetHash().ToString());