When compiling without external signer support, the resulted `bench_bitcoin.exe` fails on Windows:
```
>.\bench_bitcoin.exe -filter=AddrManSelectByNetwork
Error: bad optional access
```

Steps to reproduce the failure:
- cross compiling on Ubuntu 22.04:
```
$ make -j $(nproc) -C depends HOST=x86_64-w64-mingw32 NO_QT=1
$ ./autogen.sh
$ ./configure CONFIG_SITE=$PWD/depends/x86_64-w64-mingw32/share/config.site --disable-external-signer
$ make -j $(nproc)
```
- compiling natively on Windows:

Apply the diff as follows:
```diff
--- a/build_msvc/bitcoin_config.h.in
+++ b/build_msvc/bitcoin_config.h.in
@@ -41,9 +41,6 @@
 /* Define this symbol to enable ZMQ functions */
 #define ENABLE_ZMQ 1
 
-/* define if external signer support is enabled (requires Boost::Process) */
-#define ENABLE_EXTERNAL_SIGNER /**/
-
 /* Define to 1 if you have the declaration of `be16toh', and to 0 if you
    don't. */
 #define HAVE_DECL_BE16TOH 0
```
Then
```
>py -3 build_msvc\msvc-autogen.py
>msbuild build_msvc\bitcoin.sln -property:Configuration=Release -verbosity:minimal
>src\bench_bitcoin.exe -filter=AddrManSelectByNetwork
Error: bad optional access
```

---

The failure does not manifest itself when running `bench_bitcoin.exe` using Wine on Linux.
{
    SetMockTime(111);
    
    for (const auto& num_sleep : {0ms, 1ms}) {
        UninterruptibleSleep(num_sleep);
        BOOST_CHECK_EQUAL(111, GetTime()); 
        BOOST_CHECK_EQUAL(111, Now<NodeSeconds>().time_since_epoch().count());
        BOOST_CHECK_EQUAL(111, TicksSinceEpoch<std::chrono::seconds>(NodeClock::now()));
        BOOST_CHECK_EQUAL(111, TicksSinceEpoch<SecondsDouble>(Now<NodeSeconds>()));
        BOOST_CHECK_EQUAL(111, GetTime<std::chrono::seconds>().count());
        BOOST_CHECK_EQUAL(111000, GetTime<std::chrono::milliseconds>().count());
        BOOST_CHECK_EQUAL(111000, TicksSinceEpoch<std::chrono::milliseconds>(NodeClock::now()));
        BOOST_CHECK_EQUAL(111000000, GetTime<std::chrono::microseconds>().count());
    }
    SetMockTime(0);
    
    const auto steady_ms_0 = Now<SteadyMilliseconds>();
    const auto steady_0 = std::chrono::steady_clock::now();
    const auto ms_0 = GetTime<std::chrono::milliseconds>();
    const auto us_0 = GetTime<std::chrono::microseconds>();
    UninterruptibleSleep(1ms);
    BOOST_CHECK(steady_ms_0 < Now<SteadyMilliseconds>());
    BOOST_CHECK(steady_0 + 1ms <= std::chrono::steady_clock::now());
    BOOST_CHECK(ms_0 < GetTime<std::chrono::milliseconds>());
    BOOST_CHECK(us_0 < GetTime<std::chrono::microseconds>());
}
BOOST_AUTO_TEST_CASE(test_IsDigit)