comctl32/listview: Use a code set by dispinfo holder to convert data encoding after LVN_GETDISPINFO

[Marvin]

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=7103

Your paranoid android.


=== W7PRO (32 bit listview) ===
listview.c:4458: Test failed: NM_HOVER allow test: the msg sequence is not complete: expected 0087 - actual 0000
listview.c:4463: Test failed: NM_HOVER block test: the msg sequence is not complete: expected 0087 - actual 0000

=== W7PROX64 (32 bit listview) ===
listview.c:4458: Test failed: NM_HOVER allow test: the msg sequence is not complete: expected 0087 - actual 0000
listview.c:4463: Test failed: NM_HOVER block test: the msg sequence is not complete: expected 0087 - actual 0000