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-rw-r--r--lib/PublicInbox/GzipFilter.pm3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/PublicInbox/GzipFilter.pm b/lib/PublicInbox/GzipFilter.pm
index b5ad9eb8..f1354d2b 100644
--- a/lib/PublicInbox/GzipFilter.pm
+++ b/lib/PublicInbox/GzipFilter.pm
@@ -165,7 +165,8 @@ sub bail  {
 # this is public-inbox-httpd-specific
 sub async_blob_cb { # git->cat_async callback
         my ($bref, $oid, $type, $size, $self) = @_;
-        my $http = $self->{env}->{'psgix.io'} or return; # client abort
+        my $http = $self->{env}->{'psgix.io'};
+        $http->{forward} or return; # client aborted
         my $smsg = $self->{smsg} or bail($self, 'BUG: no smsg');
         if (!defined($oid)) {
                 # it's possible to have TOCTOU if an admin runs