Description:
------------
In some cases SoapServer::handle does not call php_end_ob_buffer and I can not 
call it from php. For example:

1. When method handle() called without arguments and it is not POST method
2. When unknown compression used or we can't uncompress compressed request.

Test script:
---------------
class A { 
}

$s = new SoapServer("wsdl.wsdl");
$s->setClass("A");

ob_start();
var_dump(ob_get_level());
$s->handle();
var_dump(ob_get_level());
echo ob_get_clean();

Expected result:
----------------
int(1)
int(1)

Actual result:
--------------
int(1)
int(2)
Notice: ob_get_clean(): failed to delete buffer default output handler