Unpublished content is causing search to break

[khaled]

If content is un-published (DB status field changed to 4, published=2, draft=1) it causes search to break (as a 404 error not a search error).

Test Plan
1. Go to any site and search for a specific piece of content by exact title. Confirm that it returns as a result (ideally the first).
2. Go into Admin and unpublish the content.
3. Confirm that the same search for the specific content piece succeeds (no error page) and does not include the unpublished content.

[khaled]

Confirm that this has been corrected.

[khaled]

Corrected problem where content is unpublished and search index has not yet been rebuilt by suppressing search results that yield null in the HealthGuruSearch? class. NULL returns are not added to the search result array now.