Replace calls to GetHash() with GetTxid() for transaction objects.

Where the caller intends to receive a transaction id and not a double
SHA256 hash.

src/qt/transactionrecord.cpp

@@ -39,7 +39,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *
     CAmount nCredit = wtx.GetCredit(ISMINE_ALL);
     CAmount nDebit = wtx.GetDebit(ISMINE_ALL);
     CAmount nNet = nCredit - nDebit;
-    uint256 hash = wtx.GetHash();
+    uint256 hash = wtx.GetTxid();
     std::map<std::string, std::string> mapValue = wtx.mapValue;
 
     if (nNet > 0 || wtx.IsCoinBase())