Ticket #17613: 17613.diff

wp-admin/includes/post.php

@@ -1649 +1649 @@
                         $val = $v ? 'true' : 'false';
                         $mce_options .= $k . ':' . $val . ', ';
                         continue;
-                } elseif ( is_string($v) && ( ('{' == $v{0} && '}' == $v{strlen($v) - 1}) || ('[' == $v{0} && ']' == $v{strlen($v) - 1}) || preg_match('/^\(?function ?\(/', $v) ) ) {
+                } elseif ( !empty($v) && is_string($v) && ( ('{' == $v{0} && '}' == $v{strlen($v) - 1}) || ('[' == $v{0} && ']' == $v{strlen($v) - 1}) || preg_match('/^\(?function ?\(/', $v) ) ) {
                         $mce_options .= $k . ':' . $v . ', ';
                         continue;
                 }