Ticket #15265: 15265.patch

wp-admin/includes/post.php

@@ -1546 +1546 @@
                         $val = $v ? 'true' : 'false';
                         $mce_options .= $k . ':' . $val . ', ';
                         continue;
-                } elseif ( is_string($v) && ( '{' == $v{0} || '[' == $v{0} ) ) {
+                } elseif ( $v && is_string($v) && ( '{' == $v{0} || '[' == $v{0} ) ) {
                         $mce_options .= $k . ':' . $v . ', ';
                         continue;
                 }