comment_nodeapi() errors on php 5.3

I'm experiencing the same symptons as described in 587568 except with the
luceneapi module. There is a patch in comment #15 that seems to work.

In luceneapi_node.module line 470 the same line of code exits that
causes the warning message in the main search module:

$node->body .= module_invoke('comment', 'nodeapi', $node, 'update index');

The changes in the patch fix the issue for me.

Drupal 6.15
luceneapi 6.x-2.2
PHP 5.3.1