@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 
{
    auto locked_chain = chain().lock();
    LOCK(cs_wallet);
    int conflictconfirms = -locked_chain->getBlockDepth(hashBlock);
    
    
    
    
    if (conflictconfirms >= 0)
        return;
    
    WalletBatch batch(*database, "r+", false);
    std::set<uint256> todo;
    std::set<uint256> done;
    todo.insert(hashTx);