wallet: Unlock spent outputs

Author: promag

src/wallet/wallet.cpp

@@ -598,6 +598,8 @@ void CWallet::AddToSpends(const COutPoint& outpoint, const uint256& wtxid)
 {
     mapTxSpends.insert(std::make_pair(outpoint, wtxid));
 
+    setLockedCoins.erase(outpoint);
+
     std::pair<TxSpends::iterator, TxSpends::iterator> range;
     range = mapTxSpends.equal_range(outpoint);
     SyncMetaData(range);