Fix delivery counter / archive relay contacts

src/Model/ItemDeliveryData.php

@@ -103,6 +103,19 @@ class ItemDeliveryData
 		return DBA::e('UPDATE `item-delivery-data` SET `queue_failed` = `queue_failed` + 1 WHERE `iid` = ?', $item_id);
 	}
 
+	/**
+	 * Increments the queue_count for the given item ID.
+	 *
+	 * @param integer $item_id
+	 * @param integer $increment
+	 * @return bool
+	 * @throws \Exception
+	 */
+	public static function incrementQueueCount($item_id, $increment)
+	{
+		return DBA::e('UPDATE `item-delivery-data` SET `queue_count` = `queue_count` + ? WHERE `iid` = ?', $increment, $item_id);
+	}
+
 	/**
 	 * Insert a new item delivery data entry
 	 *