[PATCH 2/3] spamcheck: use v5.12 and golf

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

No problems with `unicode_strings' in these modules.  We can
also shave our LoC count in a few places.
---
 lib/PublicInbox/Spamcheck.pm       | 12 ++++--------
 lib/PublicInbox/Spamcheck/Spamc.pm |  5 ++---
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/lib/PublicInbox/Spamcheck.pm b/lib/PublicInbox/Spamcheck.pm
index d8fa80c8..fbf9355d 100644
--- a/lib/PublicInbox/Spamcheck.pm
+++ b/lib/PublicInbox/Spamcheck.pm
@@ -1,21 +1,17 @@
-# Copyright (C) 2018-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # Spamchecking used by -watch and -mda tools
 package PublicInbox::Spamcheck;
-use strict;
-use warnings;
+use v5.12;
 
 sub get {
 	my ($cfg, $key, $default) = @_;
-	my $spamcheck = $cfg->{$key};
-	$spamcheck = $default unless $spamcheck;
+	my $spamcheck = $cfg->{$key} || $default;
 
 	return if !$spamcheck || $spamcheck eq 'none';
 
-	if ($spamcheck eq 'spamc') {
-		$spamcheck = 'PublicInbox::Spamcheck::Spamc';
-	}
+	$spamcheck = 'PublicInbox::Spamcheck::Spamc' if $spamcheck eq 'spamc';
 	if ($spamcheck =~ /::/) {
 		eval "require $spamcheck";
 		return $spamcheck->new;
diff --git a/lib/PublicInbox/Spamcheck/Spamc.pm b/lib/PublicInbox/Spamcheck/Spamc.pm
index d2b6429c..2f821532 100644
--- a/lib/PublicInbox/Spamcheck/Spamc.pm
+++ b/lib/PublicInbox/Spamcheck/Spamc.pm
@@ -1,10 +1,9 @@
-# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # Default spam filter class for wrapping spamc(1)
 package PublicInbox::Spamcheck::Spamc;
-use strict;
-use warnings;
+use v5.12;
 use PublicInbox::Spawn qw(popen_rd spawn);
 use IO::Handle;
 use Fcntl qw(SEEK_SET);