MySQL error encountered in a view using image attach when an exposed filter returns a null value

I hope this isn't a duplicate, but I couldn't find one.

It appears that when you attempt to expose a filter in a View that has included Image Attach fields, and the filtration query does not pull up any nodes (i.e., the query is empty), it produces this error.

warning: implode() [function.implode]: Invalid arguments passed in /SITEROOT/MYSITE.info/httpdocs/sites/all/modules/image/contrib/image_attach/image_attach_views_handler_field_attached_images.inc on line 73.
user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') ORDER BY weight' at line 1 query: SELECT nid, iid FROM image_attach WHERE nid IN () ORDER BY weight in /SITEROOT/MYSITE.info/httpdocs/sites/all/modules/image/contrib/image_attach/image_attach_views_handler_field_attached_images.inc on line 74.

This can be traced to the image_attach_views_handler_field_attached_images.inc file, specifically this piece of code.

$nids_string = implode(',', $nids);
    	$result = db_query("SELECT nid, iid FROM {image_attach} WHERE nid IN (" . $nids_string . ") ORDER BY weight");
    	while ($data = db_fetch_object($result)) {
      		// Store all the attached image nids (iid) keyed by attaching nid.
      		$attached_images[$data->nid][] = $data->iid;
   		}
	}

This code appears to be running whenever the view is produced, so if the filter returns a null value, the query will run anyway.

I have temporarily fixed it like this:

    if ($nid != ''){
		$nids_string = implode(',', $nids);
    	$result = db_query("SELECT nid, iid FROM {image_attach} WHERE nid IN (" . $nids_string . ") ORDER BY weight");
    	while ($data = db_fetch_object($result)) {
      		// Store all the attached image nids (iid) keyed by attaching nid.
      		$attached_images[$data->nid][] = $data->iid;
   		}
	}

This has not yet produced any problems, but I am wholly unaware of the implications of my actions so I hope this can be fixed in a future patch.

Again, if this is already a known issue, let this post die a horrid death.

Warmest regards,