message: examples: Windows compile fix.
diff: #include <unistd.h>
  #else
  #include <Windows.h>
  +using ssize_t = SSIZE_T;
  #endif
  using namespace std;
  @@ -76,7 +77,6 @@ namespace {
  return ::write(STDOUT_FILENO, _buf, _size);
  #else
  DWORD nwritten{};
  - WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, static_cast<DWORD>(n), &nwritten, nullptr);
  auto const rv = WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), _buf, static_cast<DWORD>(_size), &nwritten, nullptr);
  if (rv == S_OK)
  return static_cast<ssize_t>(nwritten);
  