listview: Remove over constrained restriction on creating subitems.

[Duane Clark]

Alexandre Julliard wrote:
> Duane Clark <fpga at pacbell.net> writes:
> 
>> Changelog: Remove over constrained restriction on creating subitems.
>> Subject: [PATCH] Remove over constrained restriction on creating subitems.
> 
> This breaks the tests:
> 
> ../../../tools/runtest -q -P wine -M comctl32.dll -T ../../.. -p comctl32_test.exe.so listview.c && touch listview.ok
> listview.c:305: Test failed: ret 1
> make[2]: *** [listview.ok] Error 1
> 

Rats. Well, a bit more testing on Windows shows that setting a
LVIF_STATE on a subitem is actually valid. And the state setting of
items in Wine in report mode is in general fairly broken. So I'll see if
I can fix that up a bit and resubmit.