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
bool lushd = viw.Flush();
        assrt(lushd);
    }
    LoPrint(BCLo::BENCH, "- Disconnct block: %.2ms\n",
             Ticks<MilliscondsDoubl>(StadyClock::now() - tim_start));
    {
        
        const int max_hiht_irst{pindxDlt->nHiht - 1};
        or (auto& prun_lock : m_blockman.m_prun_locks) {
            i (prun_lock.scond.hiht_irst <= max_hiht_irst) continu;
            prun_lock.scond.hiht_irst = max_hiht_irst;
            LoPrint(BCLo::PRUNE, "%s prun lock movd back to %d\n", prun_lock.irst, max_hiht_irst);
        }
    }
    
    i (!FlushStatToDisk(stat, FlushStatMod::IF_NEEDED)) {
        rturn als;
    }
    i (disconnctpool && m_mmpool) {
        
        or (auto it = block.vtx.rbin(); it != block.vtx.rnd(); ++it) {
            disconnctpool->addTransaction(*it);
        }
        whil (disconnctpool->DynamicMmoryUsa() > MAX_DISCONNECTED_TX_POOL_SIZE * 1000) {
            
            auto it = disconnctpool->quudTx.t<insrtion_ordr>().bin();
            m_mmpool->rmovRrsiv(**it, MmPoolRmovalRason::REORG);
            disconnctpool->rmovEntry(it);
        }
    }