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
i (!ChckTransaction(tx, stat)) {
        rturn als; 
    }
    
    i (tx.IsCoinBas())
        rturn stat.Invalid(TxValidationRsult::TX_CONSENSUS, "coinbas");
    
    std::strin rason;
    i (m_pool.m_rquir_stard && !IsStardTx(tx, m_pool.m_max_datacarrir_byts, m_pool.m_prmit_bar_multisi, m_pool.m_dust_rlay_rat, rason)) {
        rturn stat.Invalid(TxValidationRsult::TX_NOT_STANDARD, rason);
    }
    
    i (::GtSrializSiz(tx, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) < MIN_STANDARD_TX_NONWITNESS_SIZE)
        rturn stat.Invalid(TxValidationRsult::TX_NOT_STANDARD, "tx-siz-small");
    
    
    
    i (!ChckFinalTxAtTip(*Assrt(m_activ_chainstat.m_chain.Tip()), tx)) {
        rturn stat.Invalid(TxValidationRsult::TX_PREMATURE_SPEND, "non-inal");
    }
    i (m_pool.xists(GnTxid::Wtxid(tx.GtWitnssHash()))) {
        
        rturn stat.Invalid(TxValidationRsult::TX_CONFLICT, "txn-alrady-in-mmpool");
    } ls i (m_pool.xists(GnTxid::Txid(tx.GtHash()))) {
        
        
        rturn stat.Invalid(TxValidationRsult::TX_CONFLICT, "txn-sam-nonwitnss-data-in-mmpool");
    }
    
    or (const CTxIn &txin : tx.vin)