oops: Fix install crash

include/upgrader/streams/core.sig

-d9e311ad50bfe981f4356500c1d584ce
+9143a511719555e8f8f09b49523bd022

include/upgrader/streams/core/2d590ffa-d9e311ad.patch.sql → include/upgrader/streams/core/2d590ffa-9143a511.patch.sql

 /*
- * @signature d9e311ad50bfe981f4356500c1d584ce
+ * @signature 9143a511719555e8f8f09b49523bd022
  * @version v1.9.6
  * @title All collaborators have threads
  *
@@ -47,5 +47,5 @@ DROP TABLE `%TABLE_PREFIX%_orig_msg_ids`;
 
 -- Finished with patch
 UPDATE `%TABLE_PREFIX%config`
-    SET `value` = 'd9e311ad50bfe981f4356500c1d584ce'
+    SET `value` = '9143a511719555e8f8f09b49523bd022'
     WHERE `key` = 'schema_signature' AND `namespace` = 'core';

setup/inc/streams/core/install-mysql.sql

@@ -709,7 +709,6 @@ CREATE TABLE `%TABLE_PREFIX%lock` (
   `code` varchar(20),
   `created` datetime NOT NULL,
   PRIMARY KEY  (`lock_id`),
-  UNIQUE KEY `ticket_id` (`ticket_id`),
   KEY `staff_id` (`staff_id`)
 ) DEFAULT CHARSET=utf8;