dpnet/tests: Avoid casting return value of HeapAlloc calls

[Michael Stefaniuc]

Frédéric Delanoy wrote:
> On Fri, Oct 21, 2011 at 02:13, Marvin <testbot at testbot.winehq.org> wrote:
>> Hi,
>>
>> While running your changed tests on Windows, I think I found new failures.
>> Being a bot and all I'm not very good at pattern recognition, so I might be
>> wrong, but could you please double-check?
>> Full results can be found at
>> http://testbot.winehq.org/JobDetails.pl?Key=15042
>>
>> Your paranoid android.
>>
>>
>> === WNT4WSSP6 (32 bit peer) ===
>> peer.c:52: Test failed: CoCreateInstance failed with 0x80040154
>> peer: unhandled exception c0000005 at 004013BF
>>
>> === W2KPROSP4 (32 bit peer) ===
>> peer.c:52: Test failed: CoCreateInstance failed with 0x80040154
>> peer: unhandled exception c0000005 at 004013BF
> 
> This also happens when you send a comment-only patch to testbot. Flaky test?
Nope. There is no dpnet dll on those boxes. winetest.exe skips those but
 the WTB doesn't.
http://test.winehq.org/data/bbbee31c38cde112cfcc7417872416bf34955367/nt4_wtb-wnt4wssp6/version.html
"dpnet	missing"

bye
	michael