t/run: avoid uninitialized var on incomplete test

Diagnosing an occasional FIFO failure in t/lei_to_mail.t...

1 files changed, 2 insertions, 1 deletions

diff --git a/t/run.perl b/t/run.perl
index 1c7bcfc3..5c056356 100755
--- a/t/run.perl
+++ b/t/run.perl
@@ -71,7 +71,8 @@ sub test_status () {
                 my $skip = '';
                 if (open my $fh, '<', $log) {
                         my @not_ok = grep(!/^(?:ok |[ \t]*#)/ms, <$fh>);
-                        pop @not_ok if $not_ok[-1] =~ /^[0-9]+\.\.[0-9]+$/;
+                        my $last = $not_ok[-1] // '';
+                        pop @not_ok if $last =~ /^[0-9]+\.\.[0-9]+$/;
                         my $pfx = "# $log: ";
                         print $OLDERR map { $pfx.$_ } @not_ok;
                         seek($fh, 0, SEEK_SET) or die "seek: $!";