Re: [PATCH 0/3] MR651: comctl32: Check reference data pointer before using it.

[Nikolay Sivov (＠nsivov)]

This gives warnings for 64-bit build:

```
../../wine-git/dlls/comctl32/tests/subclass.c: In function ���test_GetWindowSubclass���:
../../wine-git/dlls/comctl32/tests/subclass.c:359:43: warning: format ���%lx��� expects argument of type ���long unsigned int���, but argument 3 has type ���DWORD_PTR��� {aka ���long long unsigned int���} [-Wformat=]
  359 |     ok(data == 0, "Got unexpected data %#lx.\n", data);
      |                                        ~~~^      ~~~~
      |                                           |      |
      |                                           |      DWORD_PTR {aka long long unsigned int}
      |                                           long unsigned int
      |                                        %#I64x
../../wine-git/dlls/comctl32/tests/subclass.c:364:43: warning: format ���%lx��� expects argument of type ���long unsigned int���, but argument 3 has type ���DWORD_PTR��� {aka ���long long unsigned int���} [-Wformat=]
  364 |     ok(data == 0, "Got unexpected data %#lx.\n", data);
      |                                        ~~~^      ~~~~
      |                                           |      |
      |                                           |      DWORD_PTR {aka long long unsigned int}
      |                                           long unsigned int
      |                                        %#I64x
../../wine-git/dlls/comctl32/tests/subclass.c:369:43: warning: format ���%lx��� expects argument of type ���long unsigned int���, but argument 3 has type ���DWORD_PTR��� {aka ���long long unsigned int���} [-Wformat=]
  369 |     ok(data == 0, "Got unexpected data %#lx.\n", data);
      |                                        ~~~^      ~~~~
      |                                           |      |
      |                                           |      DWORD_PTR {aka long long unsigned int}
      |                                           long unsigned int
      |                                        %#I64x
../../wine-git/dlls/comctl32/tests/subclass.c:377:43: warning: format ���%lx��� expects argument of type ���long unsigned int���, but argument 3 has type ���DWORD_PTR��� {aka ���long long unsigned int���} [-Wformat=]
  377 |     ok(data == 7, "Got unexpected data %#lx.\n", data);
      |                                        ~~~^      ~~~~
      |                                           |      |
      |                                           |      DWORD_PTR {aka long long unsigned int}
      |                                           long unsigned int
      |                                        %#I64x
```