Calling `*txoutset` calls in the console has been broken since #19056. The addition of the `RpcInterruptionPoint()` calls means that any user running the GUI without passing `-server`, will just see ["Shutting down"](https://github.com/bitcoin/bitcoin/blob/b33136b6ba9887f7db651c4c5264ca7f2f601df7/src/rpc/server.cpp#L325) printed to the console:

![console](https://user-images.githubusercontent.com/863730/84460760-55599a80-ac9d-11ea-8720-a718edde75dd.png)

cc @MarcoFalke 
{
    CHECK_NONFATAL(blockindex);
    int nShift = (blockindex->nBits >> 24) & 0xff;
    double dDiff =
        (double)0x0000ffff / (double)(blockindex->nBits & 0x00ffffff);
    while (nShift < 29)
    {
        dDiff *= 256.0;
        nShift++;
    }
    while (nShift > 29)
    {
        dDiff /= 256.0;
        nShift--;
    }
    return dDiff;
}
static int ComputeNextBlockAndDepth(const CBlockIndex* tip, const CBlockIndex* blockindex, const CBlockIndex*& next)
{
    next = tip->GetAncestor(blockindex->nHeight + 1);
    if (next && next->pprev == blockindex) {
        return tip->nHeight - blockindex->nHeight + 1;
    }
    next = nullptr;
    return blockindex == tip ? 1 : -1;
}
UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex)