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-rw-r--r--lib/PublicInbox/MID.pm4
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/PublicInbox/MID.pm b/lib/PublicInbox/MID.pm
index d7a42c38..33d5af74 100644
--- a/lib/PublicInbox/MID.pm
+++ b/lib/PublicInbox/MID.pm
@@ -120,9 +120,7 @@ sub uniq_mids ($;$) {
                         warn "Message-ID: <$mid> too long, truncating\n";
                         $mid = substr($mid, 0, MAX_MID_SIZE);
                 }
-                next if $seen->{$mid};
-                push @ret, $mid;
-                $seen->{$mid} = 1;
+                push(@ret, $mid) unless $seen->{$mid}++;
         }
         \@ret;
 }