fix test_repoconf.c:137:5: error: unknown type name ‘intmax_t’
fix test_repoconf.c:137:5: error: unknown type name ‘intmax_t’

Signed-off-by: DengkeDu <b8df0efd27a8bd5ed9ba202b9690cbb60832cf22@gmail.com>

rpm-software-management/librepo,Tojaj/librepo,Tojaj/librepo,rpm-software-management/librepo,rpm-software-management/librepo,Tojaj/librepo