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 
scan_progress = 0;
    count = 0;
    while (cursor->Valid()) {
        COutPoint key;
        Coin coin;
        if (!cursor->GetKey(key) || !cursor->GetValue(coin)) return false;
        if (++count % 8192 == 0) {
            RpcInterruptionPoint();
            if (should_abort) {
                
                return false;
            }
        }
        if (count % 256 == 0) {
            
            uint32_t high = 0x100 * *key.hash.begin() + *(key.hash.begin() + 1);
            scan_progress = (int)(high * 100.0 / 65536.0 + 0.5);
        }
        if (needles.count(coin.out.scriptPubKey)) {
            out_results.emplace(key, coin);
        }
        cursor->Next();
    }
    scan_progress = 100;
    return true;
}
static std::atomic<int> g_scan_progress;
static std::atomic<bool> g_scan_in_progress;
static std::atomic<bool> g_should_abort_scan;
class CoinsViewScanReserver