t/harness - show the time tests finished (for late night hack sessions)

I often have multiple tabs open, and have stale test output in them,
showing the time at the end will make it easier to find the "latest"
test output, especially during late night sessions. :-)

1 files changed, 1 insertions, 0 deletions

diff --git a/t/harness b/t/harness
index 5d26a7873e..102753f7b2 100644
--- a/t/harness
+++ b/t/harness
@@ -478,4 +478,5 @@ $h->callback(
 
 my $agg = $h->runtests(@tests);
 _cleanup_valgrind(\$htoolnm, \$hgrind_ct);
+printf "Finished test run at %s.\n", scalar(localtime);
 exit $agg->has_errors ? 1 : 0;