common/common.h:219:3: warning: base class ‘struct std::atomic<bool>’ should be explicitly initialized in the copy constructor [-Wextra]

[marxin]

One more warning I noticed:

                 from /home/marxin/Programming/mold/elf/gdb-index.cc:59,
                 from /home/marxin/Programming/mold/build2/elf/gdb-index.cc.X86_64.cc:3:
/home/marxin/Programming/mold/elf/../common/common.h: In instantiation of ‘mold::Atomic<T>::Atomic(const mold::Atomic<T>&) [with T = unsigned int]’:
/home/marxin/Programming/mold/elf/gdb-index.cc:142:8:   required from ‘std::pair<T*, bool> mold::ConcurrentMap<T>::insert(std::string_view, mold::u64, const T&) [with T = mold::elf::MapValue; std::string_view = std::basic_string_view<char>; mold::u64 = long unsigned int]’
/home/marxin/Programming/mold/elf/gdb-index.cc:686:43:   required from ‘void mold::elf::write_gdb_index(Context<E>&) [with E = X86_64]’
/home/marxin/Programming/mold/elf/gdb-index.cc:791:43:   required from here
/home/marxin/Programming/mold/elf/../common/common.h:219:3: warning: base class ‘struct std::atomic<unsigned int>’ should be explicitly initialized in the copy constructor [-Wextra]
  219 |   Atomic(const Atomic<T> &other) { store(other.load()); }
      |   ^~~~~~
In file included from /home/marxin/Programming/mold/elf/mold.h:4,
                 from /home/marxin/Programming/mold/elf/gdb-index.cc:59,
                 from /home/marxin/Programming/mold/build2/elf/gdb-index.cc.I386.cc:3: