Amend fix for #12564

[chrchr-github]

No description provided.

[firewave]

More faillout:

#include <cstdint>

class ProcessExecutor {
public:
  ProcessExecutor();
};

enum class Color : std::uint8_t ;

ProcessExecutor::ProcessExecutor() {}

namespace {
}

input.cpp:12:1: debug: Scope::checkVariable found variable 'namespace' with varid 0. [varid0]
namespace {
^