[PATCH 1/2] searchthread: remove + inline single-use cast sub

[Eric Wong <e@80x24.org>]

No point in wasting several kilobytes of memory for a single-use
one-line sub.
---
 lib/PublicInbox/SearchThread.pm | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/lib/PublicInbox/SearchThread.pm b/lib/PublicInbox/SearchThread.pm
index f07dd696..cc8c90ce 100644
--- a/lib/PublicInbox/SearchThread.pm
+++ b/lib/PublicInbox/SearchThread.pm
@@ -38,13 +38,13 @@ sub thread {
 		# TODO: move this to a more appropriate place, breaks tests
 		# if we do it during psgi_cull
 		delete $_->{num};
-
-		PublicInbox::SearchThread::Msg::cast($_);
+		bless $_, 'PublicInbox::SearchThread::Msg';
 		if (exists $id_table{$_->{mid}}) {
 			$_->{children} = [];
 			push @imposters, $_; # we'll deal with them later
 			undef;
 		} else {
+			$_->{children} = {}; # will become arrayref later
 			$id_table{$_->{mid}} = $_;
 			defined($_->{references});
 		}
@@ -108,13 +108,6 @@ sub ghost {
 	}, __PACKAGE__;
 }
 
-# give a existing smsg the methods of this class
-sub cast {
-	my ($smsg) = @_;
-	$smsg->{children} = {};
-	bless $smsg, __PACKAGE__;
-}
-
 sub topmost {
 	my ($self) = @_;
 	my @q = ($self);