Issue #3145412 by pavnish, cburschka, amateescu: Connection::__destruct()...

Issue #3145412 by pavnish, cburschka, amateescu: Connection::__destruct() can't delete the sqlite file

(cherry picked from commit 0073e148)

core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php

@@ -184,9 +184,9 @@ public function __destruct() {
 
           // We can prune the database file if it doesn't have any tables.
           if ($count == 0 && $this->connectionOptions['database'] != ':memory:' && file_exists($this->connectionOptions['database'] . '-' . $prefix)) {
-            // Detaching the database fails at this point, but no other queries
-            // are executed after the connection is destructed so we can simply
-            // remove the database file.
+            // Detach the database.
+            $this->query('DETACH DATABASE :schema', [':schema' => $prefix]);
+            // Destroy the database file.
             unlink($this->connectionOptions['database'] . '-' . $prefix);
           }
         }