Revert for ctypes

Author: sergey-miryanov

Modules/_ctypes/_ctypes.c

@@ -987,7 +987,7 @@ CDataType_from_buffer_copy_impl(PyObject *type, PyTypeObject *cls,
 
     result = generic_pycdata_new(st, (PyTypeObject *)type, NULL, NULL);
     if (result != NULL) {
-        assert(Py_REFCNT(result) == 1);
+        assert(_PyObject_IsUniquelyReferenced(result));
         memcpy(((CDataObject *) result)->b_ptr, (char *)buffer->buf + offset, info->size);
     }
     return result;
@@ -3251,7 +3251,7 @@ PyCData_MallocBuffer(CDataObject *obj, StgInfo *info)
      * used in constructors and therefore does not have concurrent
      * access.
      */
-   assert (_PyObject_IsUniquelyReferenced((PyObject *)obj));
+   assert (Py_REFCNT(obj) == 1);
    assert(stginfo_get_dict_final(info) == 1);
 
     if ((size_t)info->size <= sizeof(obj->b_value)) {