lei: restore working directory in more places

Every tick of the event loop can change the working directory,
so we need to restore it for every client if they operate
in different directories.

This would be easier if we had openat(2) and friends in Perl;
but Inline::C is practically required for lei, now.

1 files changed, 1 insertions, 3 deletions

diff --git a/lib/PublicInbox/LeiQuery.pm b/lib/PublicInbox/LeiQuery.pm
index 1999a534..0435a516 100644
--- a/lib/PublicInbox/LeiQuery.pm
+++ b/lib/PublicInbox/LeiQuery.pm
@@ -51,9 +51,7 @@ sub qstr_add { # PublicInbox::InputPipe::consume callback for --stdin
         my ($self) = @_; # $_[1] = $rbuf
         if (defined($_[1])) {
                 $_[1] eq '' and return eval {
-                        if (my $dfd = $self->{3}) {
-                                chdir($dfd) or return $self->fail("fchdir: $!");
-                        }
+                        $self->fchdir or return;
                         $self->{mset_opt}->{q_raw} = $self->{mset_opt}->{qstr};
                         $self->{lse}->query_approxidate($self->{lse}->git,
                                                 $self->{mset_opt}->{qstr});