lei-daemon: note FD count mismatch to client

This should help in some error diagnostics

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index ef72758c..a949ae3e 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -998,7 +998,7 @@ sub accept_dispatch { # Listener {post_accept} callback
                         open($self->{$i++}, '+<&=', $fd) and next;
                         send($sock, "open(+<&=$fd) (FD=$i): $!", MSG_EOR);
                 }
-                return if scalar(@fds) != 4;
+                $i == 4 or return send($sock, 'not enough FDs='.($i-1), MSG_EOR)
         }
         $self->{2}->autoflush(1); # keep stdout buffered until x_it|DESTROY
         # $ENV_STR = join('', map { "\0$_=$ENV{$_}" } keys %ENV);