Bug with approxidate("never")?

[Olivier Marin <dkr+ml.git@free.fr>]

Hi,

While I was playing in the stash area and with "reflog expire" I was
surprised by the fact that "never" is not always never. For example,
approxidate("never") returns 4294960096 for my timezone (CET-2), it
loops with all negative timezones.

I fixed it by replacing date_never() with this one:

static void date_never(struct tm *tm, int *num)
{
        time_t n = 0;
        localtime_r(&n, tm);
}

but I not sure this is the right fix. Better idea?

If you want to try yourself, the following test case should trigger
the problem.

diff --git a/t/t1410-reflog.sh b/t/t1410-reflog.sh
index 73f830d..b07d7bd 100755
--- a/t/t1410-reflog.sh
+++ b/t/t1410-reflog.sh
@@ -158,6 +158,17 @@ test_expect_success 'reflog expire' '
        check_fsck "dangling commit $K"
 '
 
+test_expect_success 'reflog expire --expire=never' '
+
+       TZ=CET-2 &&
+       git reflog expire --expire=never \
+               --stale-fix \
+               --all &&
+
+       loglen=$(wc -l <.git/logs/refs/heads/master) &&
+       test $loglen = 2
+'
+
 test_expect_success 'prune and fsck' '
 
        git prune &&