index: "git log" failures are fatal

While I've never seen "git log" fail on its own, it could happen
one day and we should be prepared to abort indexing when it
happens.

Beef up tests for t/spawn.t to ensure close() behaves
on popen_rd the way we expect it to.

1 files changed, 2 insertions, 2 deletions

diff --git a/t/spawn.t b/t/spawn.t
index aba1a26c..ebebfb57 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -71,13 +71,13 @@ use PublicInbox::Spawn qw(which spawn popen_rd);
         is($buf, "hello\n", 'tied gets works');
         is(sysread($fh, $buf, 6), 0, 'sysread got EOF');
         $? = 1;
-        close $fh;
+        ok(close($fh), 'close succeeds');
         is($?, 0, '$? set properly');
 }
 
 {
         my $fh = popen_rd([qw(false)]);
-        close $fh;
+        ok(!close($fh), 'close fails on false');
         isnt($?, 0, '$? set properly: '.$?);
 }