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-rw-r--r--lib/PublicInbox/SearchThread.pm5
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/PublicInbox/SearchThread.pm b/lib/PublicInbox/SearchThread.pm
index 05de9ec5..003a8d11 100644
--- a/lib/PublicInbox/SearchThread.pm
+++ b/lib/PublicInbox/SearchThread.pm
@@ -33,7 +33,7 @@ sub thread {
         my $self = shift;
         _add_message($self, $_) foreach @{$self->{messages}};
         my $id_table = delete $self->{id_table};
-        $self->{rootset} = [ grep { !$_->{parent} } values %$id_table ];
+        $self->{rootset} = [ grep { !delete $_->{parent} } values %$id_table ];
 }
 
 sub _get_cont_for_id ($$) {
@@ -90,7 +90,6 @@ package PublicInbox::SearchThread::Msg;
 use strict;
 use warnings;
 use Carp qw(croak);
-use Scalar::Util qw(weaken);
 
 sub new {
         bless {
@@ -112,7 +111,7 @@ sub add_child {
                 delete $parent->{children}->{$cid};
         }
 
-        weaken($child->{parent} = $self);
+        $child->{parent} = $self;
 }
 
 sub has_descendent {