Fix debug log message

nospam.php

@@ -72,7 +72,7 @@ function nospam_json_query($method, $s) {
 function nospam_auto_check_comment($commentdata) {
   $comment = nospam_make_comment($commentdata);
   $r = nospam_json_query('test', $comment);
-  error_log('nospam_auto_check_comment(): ' . get_option('home') . ' -> ' . $r);
+  error_log('nospam_auto_check_comment(): ' . get_option('home') . ' -> ' . json_encode($r));
   if ($r && $r['status'] != 'ok') {
     add_filter('pre_comment_approved',
                create_function('$a', 'return \'spam\';'), 99);