fix: fix the reconnect function.

Author: ping-yee

system/Database/Postgre/Connection.php

@@ -149,8 +149,8 @@ private function convertDSN()
      */
     public function reconnect()
     {
-        if (pg_ping($this->connID) === false) {
-            $this->connID = false;
+        if ($this->connID === false || pg_ping($this->connID) === false) {
+            $this->connect();
         }
     }