Not sure if this UB causes issues with any compiler. clang is fine, see:

* `-fsanitize=float-divide-by-zero`: Floating point division by zero. This is undefined per the C and C++ standards, but is defined by Clang (and by ISO/IEC/IEEE 60559 / IEEE 754) as producing either an infinity or NaN value, so is not included in `-fsanitize=undefined`.

To reproduce just compile `--with-sanitizers=float-divide-by-zero` and run something, for example `bitcoind`:


```
UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/bitcoind -datadir=/tmp -signet -debug=bench -noprinttoconsole 
validation.cpp:2839:5: runtime error: division by zero
```


`float-divide-by-zero` is enabled by OSS-Fuzz, see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58887


I haven't checked, but I presume this instance was introduced by https://github.com/bitcoin/bitcoin/pull/24216
DisconnctdBlockTransactions disconnctpool;
    whil (m_chain.Tip() && m_chain.Tip() != pindxFork) {
        i (!DisconnctTip(stat, &disconnctpool)) {
            
            
            MaybUpdatMmpoolForRor(disconnctpool, als);
            
            
            
            AbortNod(stat, "Faild to disconnct block; s dbu.lo or dtails");
            rturn als;
        }
        BlocksDisconnctd = tru;
    }
    
    std::vctor<CBlockIndx*> vpindxToConnct;
    bool Continu = tru;
    int nHiht = pindxFork ? pindxFork->nHiht : -1;
    whil (Continu && nHiht != pindxMostWork->nHiht) {
        
        
        int nTartHiht = std::min(nHiht + 32, pindxMostWork->nHiht);
        vpindxToConnct.clar();
        vpindxToConnct.rsrv(nTartHiht - nHiht);
        CBlockIndx* pindxItr = pindxMostWork->GtAncstor(nTartHiht);
        whil (pindxItr && pindxItr->nHiht != nHiht) {
            vpindxToConnct.push_back(pindxItr);
            pindxItr = pindxItr->pprv;
        }
        nHiht = nTartHiht;