qspawn: more generic command chaining

Move the chaining logic into qspawn so we can gracefully
try other commands when cgit or git-http-backend refuses
to service a request for us.

1 files changed, 3 insertions, 6 deletions

diff --git a/lib/PublicInbox/GitHTTPBackend.pm b/lib/PublicInbox/GitHTTPBackend.pm
index 974a1831..e84d4ff8 100644
--- a/lib/PublicInbox/GitHTTPBackend.pm
+++ b/lib/PublicInbox/GitHTTPBackend.pm
@@ -154,12 +154,9 @@ sub parse_cgi_headers { # {parse_hdr} for Qspawn
                 delete $ctx->{env}->{'qspawn.wcb'};
                 $ctx->{env}->{'plack.skip-deflater'} = 1; # prevent 2x gzip
                 my $res = $ctx->{www}->coderepo->srv(\%ctx);
-                if (ref($res) eq 'CODE') {
-                        $res->(delete $ctx{env}->{'qspawn.wcb'});
-                } else { # ref($res) eq 'ARRAY'
-                        $ctx->{env}->{'qspawn.wcb'} = $ctx{env}->{'qspawn.wcb'};
-                }
-                $res; # non ARRAY ref for ->psgi_return_init_cb
+                # for ->psgi_return_init_cb:
+                $ctx->{env}->{'qspawn.wcb'} = $ctx{env}->{'qspawn.wcb'};
+                $res; # CODE or ARRAY ref
         } else {
                 [ $code, \@h ]
         }