Description:
------------
__wakeup is called twice, the same object

Reproduce code:
---------------
http://nopaste.php-quake.net/36927

Expected result:
----------------
2
object(a)#1 (2) 
  { ["foo:private"]=> 
      int(1) 
    ["bar:private"]=> string(5) "hello" 
  } 

object(b)#2 (1) 
{ 
  ["a:private"]=> &object(a)#1 (2) 
   { ["foo:private"]=>int(1) 
     ["bar:private"]=>string(5) "hello" } 
} 
hello

Actual result:
--------------
22
hello
object(a)#1 (2) 
  { ["foo:private"]=> 
      int(1) 
    ["bar:private"]=> string(5) "hello" 
  } 

object(b)#2 (1) 
{ 
  ["a:private"]=> &object(a)#1 (2) 
   { ["foo:private"]=>int(1) 
     ["bar:private"]=>string(5) "hello" } 
} 
hello