Method ~FilebufTestGuard

tests/fl/stl/detail/file_handle.cpp:16–18

        fl::StubFileSystem::createDirectory(mDir);
    }
    ~FilebufTestGuard() {
        fl::StubFileSystem::forceRemoveDirectory(mDir);
    }
    fl::string filePath(const char* name) const {
        fl::string p = mDir;
        p.append("/");