http://bugs.winehq.org/show_bug.cgi?id=26929
--- Comment #2 from paulo i30817@gmail.com 2011-04-25 15:15:45 CDT --- Looking at the code, it huh, looks kinda suspicious
if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs ))) { HeapFree( GetProcessHeap(), 0, dc ); dc = NULL; } dc->nulldrv.hdc = dc->hSelf;
Unconditional dereference.