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.
{
    BOOST_CHECK(!ToIntegral<T>(STRING_WITH_EMBEDDED_NULL_CHAR));
    BOOST_CHECK(!ToIntegral<T>(" 1"));
    BOOST_CHECK(!ToIntegral<T>("1 "));
    BOOST_CHECK(!ToIntegral<T>("1a"));
    BOOST_CHECK(!ToIntegral<T>("1.1"));
    BOOST_CHECK(!ToIntegral<T>("1.9"));
    BOOST_CHECK(!ToIntegral<T>("+01.9"));
    BOOST_CHECK(!ToIntegral<T>("-"));
    BOOST_CHECK(!ToIntegral<T>("+"));
    BOOST_CHECK(!ToIntegral<T>(" -1"));
    BOOST_CHECK(!ToIntegral<T>("-1 "));
    BOOST_CHECK(!ToIntegral<T>(" -1 "));
    BOOST_CHECK(!ToIntegral<T>("+1"));
    BOOST_CHECK(!ToIntegral<T>(" +1"));
    BOOST_CHECK(!ToIntegral<T>(" +1 "));
    BOOST_CHECK(!ToIntegral<T>("+-1"));
    BOOST_CHECK(!ToIntegral<T>("-+1"));
    BOOST_CHECK(!ToIntegral<T>("++1"));
    BOOST_CHECK(!ToIntegral<T>("--1"));
    BOOST_CHECK(!ToIntegral<T>(""));
    BOOST_CHECK(!ToIntegral<T>("aap"));
    BOOST_CHECK(!ToIntegral<T>("0x1"));
    BOOST_CHECK(!ToIntegral<T>("-32482348723847471234"));
    BOOST_CHECK(!ToIntegral<T>("32482348723847471234"));
}
BOOST_AUTO_TEST_CASE(test_ToIntegral)