[PATCH] qspawn: fix process finalization for generic PSGI server

[Eric Wong]

This fixes the inability to fallback to WwwCoderepo on cgit 404s
with generic PSGI servers.  Unfortunately, this doesn't seem to
get tested with generic PSGI tests, and doesn't happen on
public-inbox-httpd, obviously.
---
 lib/PublicInbox/Qspawn.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/Qspawn.pm b/lib/PublicInbox/Qspawn.pm
index 9ca6b3db..297a284f 100644
--- a/lib/PublicInbox/Qspawn.pm
+++ b/lib/PublicInbox/Qspawn.pm
@@ -233,9 +233,10 @@ sub psgi_return_init_cb {
        if (ref($r) ne 'ARRAY' || scalar(@$r) == 3) { # error
                if ($async) { # calls rpipe->close && ->event_step
                        $async->close; # PublicInbox::HTTPD::Async::close
-               } else {
-                       $self->{rpipe}->close;
+               } else { # generic PSGI:
+                       delete($self->{rpipe})->close;
                        event_step($self);
+                       waitpid_err($self);
                }
                if (ref($r) eq 'ARRAY') { # error
                        $wcb->($r)