opengl32: Page fault in ROSGL_SetContextCallBack on Heroes 3 Demo

Using r44431 in vbox with guest additions and Guild Wars

Entered debugger on first-chance exception (Exception Code: 0xc0000005) (Page Fault)
Memory at 0x02AA7E66 could not be written: Page protection violation.
kdb:> bt
Eip:
<ntdll.dll:720e> include/reactos/wine/list.h:110 (HEAP_CreateFreeBlock)
Frames:
<ntdll.dll:7339> lib/rtl/heap.c:608 (HEAP_MakeInUseBlockFree)
<ntdll.dll:8472> lib/rtl/heap.c:1379 (RtlFreeHeap@12)
<opengl32.dll:43e3> dll/win32/opengl32/opengl32.c:82 (OPENGL32_ThreadDetach)
<opengl32.dll:585e> opengl32.c:82 (DllMain@12)
<ntdll.dll:2f47> LdrpCallDllEntry
<ntdll.dll:5fc2>
<kernel32.dll:28e8d>
<kernel32.dll:28caf>
<00000000>
kdb:> cont
(ntoskrnl\ke\i386\exp.c:1053) Kill Gw.exe, ExceptionCode: c0000005, ExceptionAddress: 7c90720e
(lib\rtl\error.c:75) no mapping for 000000c0