change the location of is_a_following_b method.

Author: aero

lib/Tweetalyst/API/Follow.pm

@@ -4,10 +4,11 @@ use namespace::autoclean;
 
 with 'Tweetalyst::API::WithDBIC';
 
-__PACKAGE__->meta->make_immutable();
-
 sub is_a_following_b {
     my ($self, $a, $b) = @_;
     return $self->resultset->search( { source => $a, destination => $b } )->count;
 }
+
+__PACKAGE__->meta->make_immutable();
+
 1;