16 bytes in 1 blocks are definitely lost 
    at  notify_alloc (heap.c:254)
    by  RtlAllocateHeap (heap.c:1700)
    by  HeapAlloc (heap.c:276)
    by  GlobalAlloc (heap.c:369)
    by  LocalAlloc (heap.c:969)
    by  Alloc (comctl32undoc.c:74)
    by  SetWindowSubclass (commctrl.c:1122)
    by  test_subclass (subclass.c:236)
    by  func_subclass (subclass.c:303)
    by  run_test (test.h:541)
    by  main (test.h:591)
 
{
   <insert_a_suppression_name_here>
   Memcheck:Leak
   fun:notify_alloc
   fun:RtlAllocateHeap
   fun:HeapAlloc
   fun:GlobalAlloc
   fun:LocalAlloc
   fun:Alloc
   fun:SetWindowSubclass
   fun:test_subclass
   fun:func_subclass
   fun:run_test
   fun:main
}
 LEAK SUMMARY:
    definitely lost: 16 bytes in 1 blocks
    indirectly lost: 120 bytes in 10 blocks
      possibly lost: 0 bytes in 0 blocks
    still reachable: 233,005 bytes in 2,110 blocks
         suppressed: 83,262 bytes in 2,821 blocks
 Reachable blocks (those to which a pointer was found) are not shown.
 To see them, rerun with: --leak-check=full --show-reachable=yes
 
 For counts of detected and suppressed errors, rerun with: -v
 ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 411 from 88)
 
 used_suppression:     94 todo_suppress_libfontconfig_leak
 used_suppression:    160 todo_suppress_dlopen_leak
 used_suppression:      1 suppress_nss_leak
 used_suppression:      2 todo_wine_dlls_winex11drv__X11DRV_XRender_Init
 used_suppression:      2 todo_wine_dlls_winex11drv__X11DRV_XComposite_Init
 used_suppression:      2 todo_wine_dlls_winex11drv__X11DRV_XRandR_Init
 used_suppression:      2 todo_wine_dlls_winex11drv__X11DRV_XF86VM_Init
 used_suppression:      4 todo_wine_dlls_winex11drv__xinerama_init
 used_suppression:      2 todo_wine_dlls_winex11drv__XkbUseExtension
 used_suppression:      1 user32_builtin_classes_leak
 used_suppression:      1 todo_suppress_wine_init_load_order_leak
 used_suppression:      1 todo_suppress_wine_alloc_module_leak
 used_suppression:      1 todo_wine_dlls_winex11drv_XOpenDisplay
 used_suppression:      3 X on SUSE11 writev uninit padding 2
 used_suppression:     96 bogus_Xcursor
 used_suppression:     68 glibc-2.10-on-SUSE-10.3-(x86)
 used_suppression:    206 dl-hack3-cond-1