@jonasschnelli wrote in #14979:
> #14573 broke < Qt5.6 compatibility due to calling the lambda version of `addAction` that was added in Qt5.6.

We currently [support](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md) QT >=5.2, but hardly anyone tests with that. If we make one of the Travis machines use it, we should have a better change of catching this.

See also discussion about minimum QT version in #13478 
if (wtxIn.tx->HasWitness() && !wtx.tx->HasWitness()) {
            wtx.SetTx(wtxIn.tx);
            fUpdated = true;
        }
    }
    
    WalletLogPrintf("AddToWallet %s  %s%s\n", wtxIn.GetHash().ToString(), (fInsertedNew ? "new" : ""), (fUpdated ? "update" : ""));
    
    if (fInsertedNew || fUpdated)
        if (!batch.WriteTx(wtx))
            return false;
    
    wtx.MarkDirty();
    
    NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
    
    std::string strCmd = gArgs.GetArg("-walletnotify", "");
    if (!strCmd.empty())
    {
        boost::replace_all(strCmd, "%s", wtxIn.GetHash().GetHex());
        std::thread t(runCommand, strCmd);
        t.detach(); 
    }
    return true;
}
void CWallet::LoadToWallet(const CWalletTx& wtxIn)