message: [vcpkg] Avoid use of atomic copy constructor on older compilers
diff: @@ -10,7 +10,7 @@ namespace vcpkg::Checks
  {
  [[noreturn]] static void cleanup_and_exit(const int exit_code)
  {
  - static std::atomic<bool> have_entered = false;
  + static std::atomic<bool> have_entered{false};
  if (have_entered) std::terminate();
  have_entered = true;
  