nano: work around gnulib weak symbol bug
nano: work around gnulib weak symbol bug

otherwise it crashes right away

JPeterMugaas/MSYS2-packages,JPeterMugaas/MSYS2-packages,mati865/MSYS2-packages,mati865/MSYS2-packages,waterlan/MSYS2-packages,JPeterMugaas/MSYS2-packages,waterlan/MSYS2-packages,mati865/MSYS2-packages,mati865/MSYS2-packages,waterlan/MSYS2-packages,JPeterMugaas/MSYS2-packages,waterlan/MSYS2-packages