Non-blocking udp socket memory leak

hi
when i make udp socket to non-blocking with,
WSAIoctl(s, FIONBIO, &enable, sizeof(enable), NULL, 0, NULL, NULL, NULL)

the connection works fine. but when i close the socket it leaks memory. Looks this issue was a known bug in wince.net4.0
http://download.microsoft.com/download/8/0/5/8057bf64-419e-4836-969c-9d09bfd47c6c/WinCE%20.NET%204.0_Update_Readme_Update_ALL.htm

but i assume this was fixed with later versions. i am using winmobile6 which runs wince5; so it should be fine.

my goal is for non-blocking sendto(..).

any clue?

regards
-g

.

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