Fixed build failure on SQL Server (pdo_sqlsrv)

Use a wrapped PDO Statement instead of a custom class for `pdo_sqlsrv` since `PDOSqlsrv\Statement` doesn't extend `PDOStatement` anymore.

Author: morozov

lib/Doctrine/DBAL/Driver/PDOConnection.php

@@ -111,7 +111,7 @@ public function requiresQueryForServerVersion()
      * @param \PDOStatement $stmt
      * @return PDOStatement
      */
-    private function createStatement(\PDOStatement $stmt) : PDOStatement
+    protected function createStatement(\PDOStatement $stmt) : PDOStatement
     {
         return new PDOStatement($stmt);
     }

lib/Doctrine/DBAL/Driver/PDOSqlsrv/Connection.php

@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Driver\PDOSqlsrv;
 
 use Doctrine\DBAL\Driver\PDOConnection;
+use Doctrine\DBAL\Driver\PDOStatement;
 use Doctrine\DBAL\ParameterType;
 
 /**
@@ -12,15 +13,6 @@
  */
 class Connection extends PDOConnection implements \Doctrine\DBAL\Driver\Connection
 {
-    /**
-     * {@inheritdoc}
-     */
-    public function __construct($dsn, $user = null, $password = null, array $options = null)
-    {
-        parent::__construct($dsn, $user, $password, $options);
-        $this->setAttribute(\PDO::ATTR_STATEMENT_CLASS, [Statement::class, []]);
-    }
-
     /**
      * {@inheritDoc}
      */
@@ -50,4 +42,12 @@ public function quote($value, $type = ParameterType::STRING)
 
         return $val;
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function createStatement(\PDOStatement $stmt) : PDOStatement
+    {
+        return new Statement($stmt);
+    }
 }