user32: Fix the pointer to custom dialog control data.

dlls/user32/dialog.c

@@ -197,7 +197,7 @@ static const WORD *DIALOG_GetControl32( const WORD *p, DLG_CONTROL_INFO *info,
             TRACE("\n");
             TRACE("  END\n" );
         }
-        info->data = p + 1;
+        info->data = p;
         p += GET_WORD(p) / sizeof(WORD);
     }
     else info->data = NULL;

dlls/user32/tests/dialog.c

@@ -553,7 +553,6 @@ static LRESULT CALLBACK test_control_procA(HWND hwnd, UINT msg, WPARAM wparam, L
             static const short sample[] = { 10,1,2,3,4,5 };
             CREATESTRUCTA *cs = (CREATESTRUCTA *)lparam;
             short *data = cs->lpCreateParams;
-todo_wine
             ok(!memcmp(data, sample, sizeof(sample)), "data mismatch: %d,%d,%d,%d,%d\n", data[0], data[1], data[2], data[3], data[4]);
         }
         return 0;