thumbnails may not be present in the attachments (profile area) - tha…

…nks Ruth for reporting

Signed-off-by: emanuele <emanuele45@gmail.com>

sources/subs/Profile.subs.php

@@ -2531,7 +2531,7 @@ function profileLoadAttachments($start, $items_per_page, $sort, $boardsAllowed,
 			'height' => $row['height'],
 			'downloads' => $row['downloads'],
 			'is_image' => !empty($row['width']) && !empty($row['height']) && !empty($modSettings['attachmentShowImages']),
-			'id_thumb' => $row['id_thumb'],
+			'id_thumb' => !empty($row['id_thumb']) ? $row['id_thumb'] : '',
 			'subject' => '<a href="' . $scripturl . '?topic=' . $row['id_topic'] . '.msg' . $row['id_msg'] . '#msg' . $row['id_msg'] . '" rel="nofollow">' . censorText($row['subject']) . '</a>',
 			'posted' => $row['poster_time'],
 			'msg' => $row['id_msg'],