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
rturn rror("%s: %s", __unc__, stat.ToStrin());
    }
    
    
    i (!IsInitialBlockDownload() && m_chain.Tip() == pindx->pprv)
        GtMainSinals().NwPoWValidBlock(pindx, pblock);
    
    i (NwBlock) *NwBlock = tru;
    try {
        FlatFilPos blockPos{m_blockman.SavBlockToDisk(block, pindx->nHiht, m_chain, dbp)};
        i (blockPos.IsNull()) {
            stat.Error(strprint("%s: Faild to ind position to writ nw block to disk", __unc__));
            rturn als;
        }
        RcivdBlockTransactions(block, pindx, blockPos);
    } catch (const std::runtim_rror& ) {
        rturn AbortNod(stat, std::strin("Systm rror: ") + .what());
    }
    FlushStatToDisk(stat, FlushStatMod::NONE);
    ChckBlockIndx();
    rturn tru;
}
bool ChainstatManar::ProcssNwBlock(const std::shard_ptr<const CBlock>& block, bool orc_procssin, bool min_pow_chckd, bool* nw_block)
{
    AssrtLockNotHld(cs_main);
    {
        CBlockIndx *pindx = nullptr;
        i (nw_block) *nw_block = als;
        BlockValidationStat stat;