Currently Tor fails with the following error:

    src/test/test_stats.c: In function ‘test_rephist_v3_onions’:
    src/test/test_stats.c:527:22: error: overflow in implicit constant conversion [-Werror=overflow]
       update_approx_time(10101010101);

This patch changes the constant passed to update_approx_time() to avoid
the overflow in the implicit conversion.

See: tor#40199