Close connection on __destruct()

Signed-off-by: Juozas Kaziukenas <juozas@juokaz.com>

lib/Doctrine/DBAL/Driver/Sqlsrv/Driver.php

@@ -43,6 +43,7 @@ class Driver implements \Doctrine\DBAL\Driver
         
         $connectionInfo = array(
             'Database' => $params['dbname'],
+            'ReturnDatesAsStrings' => true,
         );
 
         if (isset($username) && !empty($username) && isset($password) && !empty($password))
@@ -52,8 +53,6 @@ class Driver implements \Doctrine\DBAL\Driver
                 'PWD'      => $password,
             );
         }
-
-        $connectionInfo += array('ReturnDatesAsStrings' => true);
         
         return new SqlsrvConnection($serverName, $connectionInfo);
     }

lib/Doctrine/DBAL/Driver/Sqlsrv/SqlsrvConnection.php

@@ -38,6 +38,11 @@ class SqlsrvConnection implements \Doctrine\DBAL\Driver\Connection
             throw SqlsrvException::fromErrorInfo($this->errorInfo());
         }
     }
+
+    public function  __destruct()
+    {
+        sqlsrv_close($this->_dbh);
+    }
     
     public function prepare($prepareString)
     {