Merge branch '18.4' of https://git.zcorp.cc/easycorp/zentaopms into 18.4

db/update18.3.sql

@@ -945,7 +945,7 @@ CHANGE `extra` `extra` char(30) NOT NULL DEFAULT '';
 
 ALTER TABLE `zt_release`
 CHANGE `project` `project` varchar(255) NOT NULL DEFAULT '0',
-CHANGE `leftBugs` `leftBugs` text NULL;
+CHANGE `leftBugs` `leftBugs` text NULL,
 CHANGE `notify` `notify` varchar(255) NOT NULL default '';
 
 ALTER TABLE `zt_researchplan`

module/chart/control.php

@@ -181,7 +181,7 @@ class chart extends control
 
         $sql    = str_replace(';', '', "$post->sql");
         $fields = $post->fieldSettings;
-        $langs  = isset($post->langs) ? json_decode($post->langs, true) : array();
+        $langs  = !empty($post->langs) ? $post->langs : array();
 
         switch($type)
         {