spawn: allow passing GLOB handles for redirects

We can save callers the trouble of {-hold} and {-dev_null}
refs as well as the trouble of calling fileno().

1 files changed, 1 insertions, 1 deletions

diff --git a/t/git.t b/t/git.t
index 6cfadd08..89a276bf 100644
--- a/t/git.t
+++ b/t/git.t
@@ -92,7 +92,7 @@ if ('alternates reloaded') {
         my @cmd = ('git', "--git-dir=$alt", qw(hash-object -w --stdin));
         is(system(qw(git init -q --bare), $alt), 0, 'create alt directory');
         open my $fh, '<', "$alt/config" or die "open failed: $!\n";
-        my $rd = popen_rd(\@cmd, {}, { 0 => fileno($fh) } );
+        my $rd = popen_rd(\@cmd, {}, { 0 => $fh } );
         close $fh or die "close failed: $!";
         chomp(my $remote = <$rd>);
         my $gcf = PublicInbox::Git->new($dir);