qt: add vout index to transaction id in transactions details dialog

src/qt/transactionrecord.cpp

@@ -224,8 +224,13 @@ bool TransactionRecord::statusUpdateNeeded()
     return status.cur_num_blocks != nBestHeight;
 }
 
-std::string TransactionRecord::getTxID()
+QString TransactionRecord::getTxID() const
 {
-    return hash.ToString() + strprintf("-%03d", idx);
+    return formatSubTxId(hash, idx);
+}
+
+QString TransactionRecord::formatSubTxId(const uint256 &hash, int vout)
+{
+    return QString::fromStdString(hash.ToString() + strprintf("-%03d", vout));
 }