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    my $error = $s->error
      if ($count > 0);
    ## log this action
    &log_action('error')
      if ($count > 0);

if ($count > 0) {
    my $error = $s->error;
    &log_action('error', $error);
}

    &log_action('error', $s->error)
        if ($count > 0);

sub log_action {
    my ($action_type, $string) = @_;
...
    
...
}