ntdll: reg.c: Fix return value of NtOpenKey when key handle is NULL

[Zac Brown]

Alexandre Julliard wrote:
> Zac Brown <zac at zacbrown.org> writes:
> 
>> Could anyone give me some feedback on this patch?
>>
>> Talked to AJ about it pre-1.0 and he seemed to think its fine, maybe he'd chime 
>> in and let me know what he thought was wrong with it this time around?
> 
> ../../../tools/runtest -q -P wine -M advapi32.dll -T ../../.. -p advapi32_test.exe.so registry.c && touch registry.ok
> registry.c:935: Test failed: expected ERROR_INVALID_PARAMETER, got 998
> make[2]: *** [registry.ok] Error 1
> 

Ah ok, thanks. Out of my depth then.

-Zac