cindex: quiet --prune when checking objectFormat

Most coderepos don't have extensions.objectFormat set,
so it's senseless to emit warnings on failures.

Fixes: 709fcf00c4d5 (cindex: use run_await to read extensions.objectFormat)

1 files changed, 5 insertions, 2 deletions

diff --git a/t/cindex.t b/t/cindex.t
index c7de1505..09183518 100644
--- a/t/cindex.t
+++ b/t/cindex.t
@@ -13,6 +13,7 @@ my ($tmp, $for_destroy) = tmpdir();
 my $pwd = getcwd();
 my @unused_keys = qw(last_commit has_threadid skip_docdata);
 local $ENV{PI_CONFIG} = '/dev/null';
+my $opt = { 1 => \(my $cidx_out), 2 => \(my $cidx_err) };
 
 # I reworked CodeSearchIdx->shard_worker to handle empty trees
 # in the initial commit generated by cvs2svn for xapian.git
@@ -166,7 +167,9 @@ SKIP: { # --prune
         is(scalar($csrch->mset('s:hi')->items), 1, 'got hit');
 
         rename("$tmp/wt0/.git", "$tmp/wt0/.giit");
-        ok(run_script([qw(-cindex -q --prune -d), "$tmp/ext"]), 'prune');
+        ok(run_script([qw(-cindex -q --prune -d), "$tmp/ext"], undef, $opt),
+                'prune');
+        is(${$opt->{2}}, '', 'nothing in stderr') or diag explain($opt);
         $csrch->reopen;
         is(scalar($csrch->mset('s:hi')->items), 0, 'hit pruned');
 
@@ -213,7 +216,7 @@ EOM
         close $fh;
         my $cmd = [ qw(-cindex -u --all --associate -d), "$tmp/ext",
                 '-I', $basic->{inboxdir} ];
-        my $opt = { 1 => \(my $cidx_out), 2 => \(my $cidx_err) };
+        $cidx_out = $cidx_err = '';
         ok(run_script($cmd, $env, $opt), 'associate w/o search');
         like($cidx_err, qr/W: \Q$basic->{inboxdir}\E not indexed for search/,
                 'non-Xapian-enabled inbox noted');