[PATCH] listener: don't loop on errors

[Eric Wong]

Fortunately, this only affects `--multi-accept=' users, with
`--multi-accept=-1' users getting infinite loops.

I noticed this when EMFILE was reached on my setup, but any
error should cause us to give up accept(2) (at least
temporarily) and allow work for other items in the event loop to
be processed.
---
 lib/PublicInbox/Listener.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/Listener.pm b/lib/PublicInbox/Listener.pm
index 4669cf04..c83901b2 100644
--- a/lib/PublicInbox/Listener.pm
+++ b/lib/PublicInbox/Listener.pm
@@ -41,9 +41,9 @@ sub event_step {
                        # ECONNABORTED is common with bad connections
                        return;
                } elsif (my $sym = $ERR_WARN{int($!)}) {
-                       warn "W: accept(): $! ($sym)\n";
+                       return warn "W: accept(): $! ($sym)\n";
                } else {
-                       warn "BUG?: accept(): $!\n";
+                       return warn "BUG?: accept(): $!\n";
                }
        } while ($n--);
 }