Wrapping a Pointer where auto_dealloc is True with another Pointer will cause double free. #492

from memory import Pointer
from memory import alloc

def test_pointer():
    ptr = alloc(4)
    Pointer(ptr)

test_pointer()

from memory import alloc
from memory import make_object
from memory.manager import CustomType
from memory.manager import TypeManager

manager = TypeManager()

class Test(CustomType, metaclass=manager):
    _size = 4

def test_customtype():
    ptr = alloc(4)
    make_object(Test, ptr)

test_customtype()